# 65 FR 82086: Endangered and Threatened Wildlife and Plants; Prudency Determinations for Eight Plant Species From the Hawaiian Islands, and Proposed Critical Habitat Designations for Eighteen Plant Species From the Island of Lanai, Hawaii

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URL: https://www.frixlaw.com/law-library/statutes/FR_PRORULE_00-31080

## Section

- **Citation:** 65 FR 82086
- **Heading:** Endangered and Threatened Wildlife and Plants; Prudency Determinations for Eight Plant Species From the Hawaiian Islands, and Proposed Critical Habitat Designations for Eighteen Plant Species From the Island of Lanai, Hawaii
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** August 14, 2026
- **Source:** Compiled text
- **Location:** Federal Register / Vol. 65 / 65 FR 82086

## Text

DEPARTMENT OF THE INTERIOR Fish and Wildlife Service 50 CFR Part 17 RIN 1018-AH10 Endangered and Threatened Wildlife and Plants; Prudency Determinations for Eight Plant Species From the Hawaiian Islands, and Proposed Critical Habitat Designations for Eighteen Plant Species From the Island of Lanai, Hawaii AGENCY:
Fish and Wildlife Service, Interior.

ACTION:
Proposed rule and notice of prudency determination.

SUMMARY:
We, the U.S. Fish and Wildlife Service (Service), have reconsidered our findings concerning whether designating critical habitat for eight federally protected plants from the island of Lanai would be prudent. Some of these plant species may also occur on other Hawaiian Islands. The eight plants were listed as endangered species under the Endangered Species Act of 1973, as amended (Act), between 1991 and 1996. At the time each plant was listed, we determined that designation of critical habitat was not prudent because it would increase the degree of threat to the species and/or would not benefit the plant.
We propose that critical habitat is prudent for seven of these species ( Abutilon eremitopetalum, Cyanea macrostegia ssp. gibsonii, Gahnia lanaiensis, Hedyotis mannii, Portulaca sclerocarpa, Tetramolopium remyi , and Viola lanaiensis ) because the potential benefits of designating critical habitat essential for the conservation of these species outweigh the risks that may result from human activity due to critical habitat designation. Therefore, we are proposing the designation of critical habitat for these seven species. We propose that designation of critical habitat is not prudent for one species, Phyllostegia glabra var. lanaiensis , which is no longer extant in the wild, and for which no genetic material is currently known. Such designation would not be beneficial to this species.
For three additional species from Lanai, Hedyotis schlechtendahliana var. remyi, Labordia tinifolia var
for these seven species. We propose that designation of critical habitat is not prudent for one species, Phyllostegia glabra var. lanaiensis , which is no longer extant in the wild, and for which no genetic material is currently known. Such designation would not be beneficial to this species.
For three additional species from Lanai, Hedyotis schlechtendahliana var. remyi, Labordia tinifolia var. lanaiensis , and Melicope munroi , we determined that designation of critical habitat was prudent at the time of their listing as endangered species in 1999. Critical habitat designations for these species are also proposed at this time.
In addition, we proposed that critical habitat was prudent for nine species ( Bonamia menziesii , Centarium sebaeoides , Clermontia oblongifolia ssp. mauiensis , Ctenitis squamigera , Cyanea grimesiana ssp. grimesiana , Cyrtandra munroi , Hibiscus brackenridgei , Spermolepis hawaiiensis , and Vigna o-wahuensis ) from Lanai that also occur on Kauai, Niihau, Maui, and/or Kahoolawe in proposed rules published earlier in 2000. Critical habitat designations for these species on Lanai are proposed at this time, with the exception of Vigna o-wahuensis for which we do not currently know the specific location of this species on Lanai.
We solicit data and comments from the public on all aspects of this proposal, including data on the economic and other impacts of the proposed designations. We may revise this proposal to incorporate or address new information received during the comment period.

DATES:
We must receive comments from all interested parties by February 26, 2001. Public hearing requests must be received by February 12, 2001.

ADDRESSES:
If you wish to comment, you may submit your comments and materials concerning this proposal by any one of several methods:
You may submit written comments and information to the Field Supervisor, U.S. Fish and Wildlife Service, Pacific Islands Office, 300 Ala Moana Blvd., P.O. Box 50088, Honolulu, Hawaii 96850-0001
. Public hearing requests must be received by February 12, 2001.

ADDRESSES:
If you wish to comment, you may submit your comments and materials concerning this proposal by any one of several methods:
You may submit written comments and information to the Field Supervisor, U.S. Fish and Wildlife Service, Pacific Islands Office, 300 Ala Moana Blvd., P.O. Box 50088, Honolulu, Hawaii 96850-0001.
You may send comments by electronic mail (e-mail) to lani_crithab_pr@fws.gov. Please submit comments in ASCII file format and avoid the use of special characters and encryption. Please include “Attn: 1018-AH10” and your name and return address in your e-mail message. If you do not receive a confirmation from the system that we have received your e-mail message, contact us directly by calling our Pacific Islands Office at phone number 808/541-3441. Please note that the e-mail address (lani_crithab_pr@fws.gov) will be closed at the termination of the public comment period.
You may hand-deliver written comments to our Pacific Islands Office at 300 Ala Moana Blvd., Room 3-122, Honolulu, Hawaii.
Comments and materials received, as well as supporting documentation used in the preparation of this proposed rule will be available for public inspection, by appointment, during normal business hours at the Pacific Islands Office.
FOR FURTHER INFORMATION CONTACT:
Paul Henson, Field Supervisor, Pacific Islands Office (see ADDRESSES section) (telephone 808/541-3441; facsimile 808/541-3470).

SUPPLEMENTARY INFORMATION:
Background
We have reconsidered our findings concerning whether designating critical habitat for eight federally protected plants from the island of Lanai is prudent. Currently, four of these species ( Abutilon eremitopetalum , Cyanea macrostegia ssp. gibsonii, Gahnia lanaiensis , and Viola lanaiensis ) are endemic to the island of Lanai, while two species ( Hedyotis mannii and Portulaca sclerocarpa ) are known from Lanai, as well as one or more other islands
designating critical habitat for eight federally protected plants from the island of Lanai is prudent. Currently, four of these species ( Abutilon eremitopetalum , Cyanea macrostegia ssp. gibsonii, Gahnia lanaiensis , and Viola lanaiensis ) are endemic to the island of Lanai, while two species ( Hedyotis mannii and Portulaca sclerocarpa ) are known from Lanai, as well as one or more other islands. One species, Tetramolopium remyi , was known from Maui and Lanai but is currently only extant on Lanai (Table 1). We believe the eighth species, Phyllostegia glabra var. lanaiensis , may be extinct.
Proposed prudency determinations for nine species ( Bonamia menziesii , Centarium sebaeoides , Clermontia oblongifolia ssp. mauiensis , Ctenitis squamigera , Cyanea grimesiana ssp. grimesiana , Cyrtandra munroi , Hibiscus brackenridgei , Spermolepis hawaiiensis , and Vigna o-wahuensis ) which also occur on the islands of Kauai or Niihau were published in a previous proposal (65 FR 66807); those which also occur on Maui or Kahoolawe are being published in a concurrent proposal.
In addition, for three species ( Hedyotis schlechtendahliana var. remyi , Labordia tinifolia var. lanaiensis , and Melicope munroi ), we determined that designation of critical habitat was prudent at the time of their listing as endangered species in 1999. Proposed critical habitat designations for these species are included in this proposal.
Table 1.—Summary of Island Distribution of 37 Species on Lanai Species Island distribution Kauai Oahu Molokai Lanai Maui Hawaii N.W. Isles, Ka hoolawe Ni ihau Abutilon eremitopetalum (No common name) C Adenophorus periens (pendant kihi fern) C H C R R C Bidens micrantha sp. kalealaha (ko oko alau) H C Bonamia menziesii (No common name) C C H C C C Brighamia rockii (pua ala) C H H Cenchrus agrimonioides (No common name) C H C R NW Isles (H) Centaurium sebaeoides (awiwi) C C C C C Clermontia oblongifolia ssp. mauiensis (oha wai) C C Ctenitis squamigera (pauoa) H C H C C H Cyanea grimesiana ssp
) C Adenophorus periens (pendant kihi fern) C H C R R C Bidens micrantha sp. kalealaha (ko oko alau) H C Bonamia menziesii (No common name) C C H C C C Brighamia rockii (pua ala) C H H Cenchrus agrimonioides (No common name) C H C R NW Isles (H) Centaurium sebaeoides (awiwi) C C C C C Clermontia oblongifolia ssp. mauiensis (oha wai) C C Ctenitis squamigera (pauoa) H C H C C H Cyanea grimesiana ssp. grimesiana (haha) C C C C Cyanea lobata (haha) H C Cyanea macrostegia ssp. gibsonii (haha) C Cyperus trachysanthos (pu uka a) C C H H Ni(C) Cyrtandra munroi (ha iwale) C C Diellia erecta (No common name) H H C H C C Diplazium molokaiense (No common name) H H H H C Gahnia lanaiensis (No common name) C Hedyotis mannii (No common name) C C H Hedyotis schlechtendahliana var. remyi (kopa) C Hesperomannia arborescens (No common name) C C H C Hibiscus brackenridgei (mao hau hele) H C H C C C Ka(R) Isodendrion pyrifolium (aupaka) H H H H C Ni(H) Labordia tinifolia var. lanaiensis (kamakahala) C Mariscus faurei (No common name) C H C Melicope munroi (alani) H C Neraudia sericea (No common name) C H C Ka(H) Phyllostegia glabra var. lanaiensis (ulihi) H Portulaca sclerocarpa (po e) C C Sesbania tomentosa (ohai) C C C H C C Ni(H), Ka(C), NW Isles (C) Silene lanceolata (No common name) H C C H C Solanum incompletum (popolo ku mai) H H H H C Spermolepis hawaiiensis (No common name) C C C C C C Tetramolopium lepidotum ssp. lepidotum (No common name) C H Tetramolopium remyi (No common name) C H Vigna o-wahuensis (No common name) H C C C C Ni(H), Ka(C) Viola lanaiensis (No common name) C Zanthoxylum hawaiiense (ae) C C H C C KEY: C (Current)—population last observed within the past 30 years. H (Historical)—population not seen for more than 30 years. R (Reported)—reported from undocumented observations. An additional 17 species are known only from historical records (pre-1970) on Lanai or from undocumented observations (Table 1)
C C Ni(H), Ka(C) Viola lanaiensis (No common name) C Zanthoxylum hawaiiense (ae) C C H C C KEY: C (Current)—population last observed within the past 30 years. H (Historical)—population not seen for more than 30 years. R (Reported)—reported from undocumented observations. An additional 17 species are known only from historical records (pre-1970) on Lanai or from undocumented observations (Table 1). Proposed prudency determinations and proposed critical habitat designations or non-designations for these species which still occur on other islands have been or will be included in the proposed rules for the islands on which they currently occur (Table 2).
Table 2.—List of Proposed Rules in Which Prudency Determinations and Critical Habitat Designations/Non-Designations Were or Will Be Proposed for 14 Species That no Longer Occur on Lanai Species Proposed rule in which prudency will be proposed Proposed rule in which critical habitat designations/non designations will be discussed Brighamia rockii Molokai Molokai. Cenchrus agrimonioides Maui and Kahoolawe Maui and Kahoolawe; Oahu. Cyperus trachysanthos Kauai and Niihau (65 FR 66807) Kauai and Niihau (65 FR 66807); Oahu. Diellia erecta Maui and Kahoolawe Maui and Kahoolawe; Molokai; Hawaii; Oahu. Diplazium molokaiense Maui and Kahoolawe Maui and Kahoolawe Hesperomannia arborescens Maui and Kahoolawe Maui and Kahoolawe; Molokai; Oahu. Isodendrion pyrifolium Hawaii Hawaii. Mariscus faurei Molokai Molokai; Hawaii. Neraudia sericea Maui and Kahoolawe Maui and Kahoolawe; Molokai. Sesbania tomentosa Kauai and Niihau (65 FR 66807) Kauai and Niihau (65 FR 66807); Maui and Kahoolawe; Molokai; Northwest Hawaiian Islands; Hawaii; Oahu. Silene lanceolata Molokai Molokai; Hawaii; Oahu. Solanum incompletum Hawaii Hawaii. Tetramolopium lepidotum ssp. lepidotum Oahu Oahu Zanthoxylum hawaiiense Kauai and Niihau (65 FR 66807) Kauai and Niihau (65 FR 66807); Maui and Kahoolawe; Molokai; Hawaii. Critical habitat is proposed for designation within 10 units on the island of Lanai
ahoolawe; Molokai; Northwest Hawaiian Islands; Hawaii; Oahu. Silene lanceolata Molokai Molokai; Hawaii; Oahu. Solanum incompletum Hawaii Hawaii. Tetramolopium lepidotum ssp. lepidotum Oahu Oahu Zanthoxylum hawaiiense Kauai and Niihau (65 FR 66807) Kauai and Niihau (65 FR 66807); Maui and Kahoolawe; Molokai; Hawaii. Critical habitat is proposed for designation within 10 units on the island of Lanai. The land area within these units totals 1,953 hectares (ha) (4,826 acres (ac)). If this proposal is made final, section 7 of the Endangered Species Act of 1973, as amended (Act) (16 U.S.C. 1531 et seq. ) would prohibit destruction or adverse modification of critical habitat through any activity funded, authorized, or carried out by any Federal agency. Section 4 of the Act requires us to consider economic and other impacts of specifying any particular area as critical habitat.
The Island of Lanai
Lanai is a small island totaling about 360 square kilometers (sq km) (139 square miles (sq mi) in area. Hidden from the trade winds in the lee or rain shadow of the more massive West Maui Mountains, Lanai was formed from a single shield volcano built by eruptions at its summit and along three rift zones. The principal rift zone runs in a northwesterly direction and forms a broad ridge whose highest point, Lanaihale, has an elevation of 1,027 meters (m) (3,370 feet (ft)) (Department of Geography 1998). The entire ridge is commonly called Lanaihale, after its highest point. Annual rainfall on the summit of Lanaihale is 760-1,015 millimeters (mm) (30-40 inches (in.)), but is considerably less, 250-500 mm (10-20 in.), over much of the rest of the island (Department of Geography 1998).
Geologically, Lanai is part of the four island complex comprising Maui, Molokai, Lanai, and Kahoolawe, known collectively as Maui Nui (Greater Maui)
Lanaihale, after its highest point. Annual rainfall on the summit of Lanaihale is 760-1,015 millimeters (mm) (30-40 inches (in.)), but is considerably less, 250-500 mm (10-20 in.), over much of the rest of the island (Department of Geography 1998).
Geologically, Lanai is part of the four island complex comprising Maui, Molokai, Lanai, and Kahoolawe, known collectively as Maui Nui (Greater Maui). During the last Ice Age about 12,000 years ago when sea levels were about 160 m (525 ft) less than their present level, these four islands were connected by a broad lowland plain (Department of Geography 1998). This land bridge allowed the movement and interaction of each island's flora and fauna and contributed to the present close relationships of their biota.
Changes in Lanai's ecosystem began with the arrival of the first Polynesians about 1500 years ago. In the 1800s, goats ( Capra hircus ) and sheep ( Ovis aries ) were first introduced to the island. Native vegetation was soon decimated by these non-native ungulates, and erosional processes from wind and rain caused further damage to the native forests (Hobdy 1993). Formal ranching was begun in 1902, and by 1910, the Territory forester helped to revegetate the island. By 1911, a ranch manager from New Zealand, George Munro, instituted a forest management practice to recover the native forests and bird species which included fencing and eradication of sheep and goats from the mountains. By the 1920s, Castle and Cooke had acquired more than 98 percent of the island and established a 6,500 ha (16,000 ac) pineapple plantation surrounding its company town, Lanai City. In the early 1990s, the pineapple plantation closed, and luxury hotels were developed by the private landowner, sustaining the island's economy today.
Discussion of the 19 Plant Taxa
Species Endemic to Lanai
Abutilon eremitopetalum
Abutilon eremitopetalum is a long-lived shrub in the mallow family (Malvaceae) with grayish-green, densely hairy, heart-shaped leaves
company town, Lanai City. In the early 1990s, the pineapple plantation closed, and luxury hotels were developed by the private landowner, sustaining the island's economy today.
Discussion of the 19 Plant Taxa
Species Endemic to Lanai
Abutilon eremitopetalum
Abutilon eremitopetalum is a long-lived shrub in the mallow family (Malvaceae) with grayish-green, densely hairy, heart-shaped leaves. It is the only Abutilon on Lanai whose flowers have green petals hidden within the calyx (the outside leaflike part of the flower) (Bates 1999).
Little is known about the life history of Abutilon eremitopetalum . It apparently flowers during the wet season ( e.g. February) (Service 1995). Pollination vectors, seed dispersal agents, longevity, specific environmental requirements, and limiting factors are unknown.
Historically, Abutilon eremitopetalum was found in small, widely scattered colonies at elevations of between 215 and 305 meters (m) (700 and 1,000 ft) in the ahupuaa (geographical areas) of Kalulu, Mahana, Maunalei, Mamaki, and Paawili on the northern, northeastern, and eastern parts of Lanai Island (Caum 1933; Hawaii Natural Heritage Program (HINHP) Database 2000; Service 1995). Currently, about seven individuals are known from a single population in Kahea Gulch on the northeastern part of the island (Geographic Decision Systems International (GDSI) 2000; HINHP Database 2000).
Abutilon eremitopetalum is found in lowland dry forest. The only known population is found at an elevation of 335 m (1,100 ft) on a moderately steep north-facing slope on red sandy soil and rock. Historically, A. eremitopetalum has been reported from elevations of 210-521 m (690-1,710 ft). Erythrina sandwicensis (wili wili) and Diospyros ferrea (lama) are the dominant trees in open forest of the area. Other associated native taxa include Canthium odoratum (ohee), Dodonaea viscosa (aalii), Nesoluma polynesicum (keahi), Rauvolfia sandwicensis (hao), S ida fallax (ilima), and Wikstroemia sp
. Historically, A. eremitopetalum has been reported from elevations of 210-521 m (690-1,710 ft). Erythrina sandwicensis (wili wili) and Diospyros ferrea (lama) are the dominant trees in open forest of the area. Other associated native taxa include Canthium odoratum (ohee), Dodonaea viscosa (aalii), Nesoluma polynesicum (keahi), Rauvolfia sandwicensis (hao), S ida fallax (ilima), and Wikstroemia sp. (akia) (Service 1995; HINHP Database 2000).
The threats to Abutilon eremitopetalum are habitat degradation and competition by encroaching exotic plant species such as Lantana camara (lantana), Leucaena leucocephala (koa haole), and Pluchea carolinensis (sourbush); browsing by axis deer ( Axis axis ); soil erosion caused by feral ungulate grazing on grasses and forbs; and the small number of extant individuals, as the limited gene pool may depress reproductive vigor, or a single natural or man-caused environmental disturbance could destroy the only known existing population. Fire is another potential threat because the area is dry much of the year (HINHP Database 2000; 56 FR 47686; Service 1995).
Cyanea macrostegia ssp. gibsonii
Cyanea macrostegia ssp. gibsonii , a long-lived perennial and a member of the bellflower family (Campanulaceae), is a palm-like tree 1 to 7 m (3 to 23 ft) tall with elliptic or oblong leaves that have fine hairs covering the lower surface. The following combination of characters separates this taxon from the other members of the genus on Lanai: calyx lobes are oblong, narrowly oblong, or ovate in shape; and the calyx and corolla (petals of a flower) both more than 0.5 centimeters (cm) (0.2 in.) wide (Lammers 1999; 56 FR 47686).
Cyanea macrostegia ssp. gibsonii was seen flowering in the month of July; however, details of its flowering period are unknown. Pollination vectors, seed dispersal agents, longevity of plants and seeds, specific environmental requirements, and other limiting factors are unknown (Service 1995).
Cyanea macrostegia ssp
oth more than 0.5 centimeters (cm) (0.2 in.) wide (Lammers 1999; 56 FR 47686).
Cyanea macrostegia ssp. gibsonii was seen flowering in the month of July; however, details of its flowering period are unknown. Pollination vectors, seed dispersal agents, longevity of plants and seeds, specific environmental requirements, and other limiting factors are unknown (Service 1995).
Cyanea macrostegia ssp. gibsonii historically is documented from the summit of Lanaihale and the upper parts of Mahana, Kaiholena, and Maunalei Valleys of Lanai (Lammers 1999; 56 FR 47686). There are a total of seven populations containing 74 individuals (HINHP Database 2000). Presently, this taxon is known from Lanaihale, Kaiholena, between Kunoa and Waialala Gulches, Waialala Gulch, Kunoa Gulch, south of Kahinahina Ridge, and at the head of Hauola Gulch (GDSI 2000; HINHP Database 2000).
The habitat of Cyanea macrostegia ssp. gibsonii is lowland wet Metrosideros polymorpha (ohia) forest or Diplopterygium pinnatum (uluhe lau nui)— M. polymorpha shrubland between elevations of 760-970 m (2,490-3,180 ft). It has been observed to grow on flat to moderate or steep slopes, usually on lower gulch slopes or gulch bottoms, often at edges of streambanks, probably due to vulnerability to ungulate damage at more accessible locations. Sites are sunny to shady, mesic to wet with clay or other soil substrate. Associated vegetation includes Dicranopteris linearis (uluhe), Perrottetia sandwicensis (olomea), Scaevola chamissoniana (naupaka kuahiwi), Pipturus sp. (mamake), Antidesma sp. (hame), Freycinetia arborea (ieie), Psychotria sp. (kopiko), Cyrtandra sp. (ha iwale), Broussaisia arguta (kanawao), Cheirodendron sp. (olapa), Clermontia sp. (oha wai), Dubautia sp. (na ena e), Hedyotis sp. (No Common Name), Ilex anomala (aiea), Labordia sp. (kamakahala), Melicope sp. (alani), Pneumatopteris sp. (No common name), and Sadleria sp. (ama u) (Service 1995; HINHP Database 2000).
The threats to Cyanea macrostegia ssp
, Psychotria sp. (kopiko), Cyrtandra sp. (ha iwale), Broussaisia arguta (kanawao), Cheirodendron sp. (olapa), Clermontia sp. (oha wai), Dubautia sp. (na ena e), Hedyotis sp. (No Common Name), Ilex anomala (aiea), Labordia sp. (kamakahala), Melicope sp. (alani), Pneumatopteris sp. (No common name), and Sadleria sp. (ama u) (Service 1995; HINHP Database 2000).
The threats to Cyanea macrostegia ssp. gibsonii are browsing by deer; competition with the alien plant Hedychium gardnerianum (kahili ginger); and the small number of extant individuals, as the limited gene pool may depress reproductive vigor, or any natural or man-caused environmental disturbance could destroy the existing populations (HINHP Database 2000; Service 1995; 56 FR 47686).
Gahnia lanaiensis
Gahnia lanaiensis , a short-lived perennial and a member of the sedge family (Cyperaceae), is a tall (1.5 to 3 m (5 to 10 ft)), tufted, grass-like plant. This sedge may be distinguished from grasses and other genera of sedges on Lanai by its spirally arranged flowers, its solid stems, and its numerous, three-ranked leaves. Gahnia lanaiensis differs from the other members of the genus on the island by its achenes (seed-like fruits), which are 0.36 to 0.46 cm (0.14 to 0.18 in.) long and purplish-black when mature (Koyama 1999).
July has been described as the “end of the flowering season” for Gahnia lanaiensis (Degener et al . 1964). Plants of this species have been observed with fruit in October (56 FR 47686). Pollination vectors, seed dispersal agents, longevity of plants and seeds, specific environmental requirements, and other limiting factors are unknown.
Gahnia lanaiensis is known from a total of three populations containing 47 individuals along the summit of Lanaihale, in the Haalelepaakai area and on the eastern edge of Hauola Gulch (HINHP Database 2000). The populations are found between 915 and 1,030 m (3,000 and 3,380 ft) in elevation (GDSI 2000; HINHP Database 2000)
ecific environmental requirements, and other limiting factors are unknown.
Gahnia lanaiensis is known from a total of three populations containing 47 individuals along the summit of Lanaihale, in the Haalelepaakai area and on the eastern edge of Hauola Gulch (HINHP Database 2000). The populations are found between 915 and 1,030 m (3,000 and 3,380 ft) in elevation (GDSI 2000; HINHP Database 2000). This distribution encompasses the entire known historic range of the species.
The habitat of Gahnia lanaiensis is lowland wet forest (shrubby rainforest to open scrubby fog belt or degraded lowland mesic forest), wet Diplopterygium pinnatum - Dicranopteris linearis-Metrosideros polymorpha shrubland, or wet Metrosideros polymorpha-Dicranopteris linearis shrubland. It occurs on flat to gentle ridgecrest topography in moist to wet clay or other soil substrate in open areas or in moderate shade. Associated species include native mat ferns, Doodia sp. (okupukupu lau ii), Odontosoria chinensis (pala a), Ilex anomala, (manono), Sadleria sp., Coprosma sp. (pilo), Lycopodium sp. (wawae iole), Scaevola sp. (naupaka), and Styphelia tameiameiae (pukiawe) (Service 1995).
The primary threat to this species is the small number of plants and their restricted distribution, which increases the potential for extinction from naturally occurring events. In addition, Gahnia lanaiensis is threatened by the planned development of the island; disturbance of the soil or destruction of groundcover plants which would increase the potential for erosion and open areas to invading non-native plants; and Leptospermum scoparium (manuka), a weedy tree introduced from New Zealand which is spreading along Lanaihale, but has not yet reached the area where Gahnia is found (Service 1995; HINHP Database 2000).
Hedyotis schlechtendahliana var. remyi
Hedyotis schlechtendahliana var
tion of groundcover plants which would increase the potential for erosion and open areas to invading non-native plants; and Leptospermum scoparium (manuka), a weedy tree introduced from New Zealand which is spreading along Lanaihale, but has not yet reached the area where Gahnia is found (Service 1995; HINHP Database 2000).
Hedyotis schlechtendahliana var. remyi
Hedyotis schlechtendahliana var. remyi , a short-lived perennial and a member of the coffee family (Rubiaceae), is a few branched subshrub from 60 to 600 cm (24 to 240 in.) long, with weakly erect or climbing stems that may be somewhat square, smooth, and glaucous (with a fine waxy coating that imparts a whitish or bluish hue to the stem). The species is distinguished from others in the genus by the distance between leaves and the length of the sprawling or climbing stems, and the variety remyi is distinguished from Hedyotis schlechtendahliana var. schlechtendahliana by the leaf shape, presence of narrow flowering stalks, and flower color (Wagner et al. 1999).
Pollination vectors, seed dispersal agents, longevity of plants and seeds, specific environmental requirements, and other limiting factors are unknown for Hedyotis schlechtendahliana var. remyi .
Historically, Hedyotis schlechtendahliana var. remyi was known from five locations on the northwestern portion of Lanaihale (HINHP Database 2000; Wagner et al. 1999; 64 FR 48307). Currently, this species is known from eight individuals in three populations on Kaiholeha-Hulupoe Ridge, Kapohaku drainage, and Waiapaa drainage on Lanaihale (GDSI 2000; HINHP Database 2000).
Hedyotis schlechtendahliana var. remyi typically grows on or near ridge crests in mesic windswept shrubland with a mixture of dominant plant taxa that may include Metrosideros polymorpha, Dicranopteris linearis , or Styphelia tameiameiae at elevations between 732 and 914 m (2,400 to 3,000 ft). Associated plant taxa include Dodonaea viscosa, Odontosoria chinensis, Sadleria sp., Dubautia sp., and Myrsine sp
schlechtendahliana var. remyi typically grows on or near ridge crests in mesic windswept shrubland with a mixture of dominant plant taxa that may include Metrosideros polymorpha, Dicranopteris linearis , or Styphelia tameiameiae at elevations between 732 and 914 m (2,400 to 3,000 ft). Associated plant taxa include Dodonaea viscosa, Odontosoria chinensis, Sadleria sp., Dubautia sp., and Myrsine sp. (kolea) (HINHP Database 2000; 64 FR 48307).
The primary threats to Hedyotis schlechtendahliana var. remyi are habitat degradation and destruction by axis deer; competition with alien plant taxa such as Psidium cattleianum (strawberry guava), Myrica faya (firetree), Leptospermum scoparium , and Schinus terebinthifolius (christmasberry); and random environmental events or reduced reproductive vigor due to the small number of remaining individuals and populations (HINHP Database 2000; 64 FR 48307).
Labordia tinifolia var. lanaiensis
Labordia tinifolia var. lanaiensis , a short lived perennial in the logan family (Loganiaceae), is an erect shrub or small tree 1.2 to 15 m (4 to 49 ft) tall. The stems branch regularly into two forks of nearly equal size. This subspecies differs from the other taxa in this endemic Hawaiian genus by having larger capsules and smaller corollas (Wagner et al. 1999). Flowering time, pollination vectors, seed dispersal agents, longevity of plants and seeds, specific environmental requirements, and other limiting factors are unknown.
Labordia tinifolia var. lanaiensis was historically known from the entire length of the summit ridge of Lanaihale (HINHP Database 2000). Currently, L. t. var. lanaiensis is known from only three populations at the southeastern end of the summit ridge of Lanaihale (HINHP Database 2000). These populations total 300 to 800 scattered individuals (GDSI 2000).
The typical habitat of Labordia tinifolia var
rdia tinifolia var. lanaiensis was historically known from the entire length of the summit ridge of Lanaihale (HINHP Database 2000). Currently, L. t. var. lanaiensis is known from only three populations at the southeastern end of the summit ridge of Lanaihale (HINHP Database 2000). These populations total 300 to 800 scattered individuals (GDSI 2000).
The typical habitat of Labordia tinifolia var. lanaiensis is lowland mesic forest associated with the native species Dicranopteris linearis and Scaevola chamissoniana , at elevations between 710 and 1,020 m (2,330 and 3,345 ft) (HINHP Database 2000; 64 FR 48307).
Labordia tinifolia var. lanaiensis is threatened by axis deer and several alien plant taxa. The species is also threatened by random environmental factors because of the small number of populations (64 FR 48307).
Viola lanaiensis
Viola lanaiensis , a short-lived perennial of the violet family (Violaceae), is a small, erect, unbranched or little branched subshrub. The leaves, which are clustered toward the upper part of the stem, are lance-shaped with a pair of narrow, membranous stipules (leaf-like appendages arising from the base of a leaf) below each leaf axis. The flowers are small, white with purple tinged or with purple veins, and occur singly or up to four per upper leaf axil. The fruit is a capsule, about 1.0 to 1.3 cm (0.4 to 0.5 in) long (Wagner et al. 1999). It is the only member of the genus on Lanai. Flowering time, pollination vectors, seed dispersal agents, longevity of plants and seeds, specific environmental requirements, and other limiting factors are unknown.
Viola lanaiensis was known historically from scattered sites on the summit, ridges, and upper slopes of Lanaihale (from near the head of Kaiolena and Hookio Gulches to the vicinity of Haalelepaakai, a distance of about 4 km (2.5 mi), at elevations of approximately 850-975 m (2,790-3,200 ft). An occurrence of V
nd seeds, specific environmental requirements, and other limiting factors are unknown.
Viola lanaiensis was known historically from scattered sites on the summit, ridges, and upper slopes of Lanaihale (from near the head of Kaiolena and Hookio Gulches to the vicinity of Haalelepaakai, a distance of about 4 km (2.5 mi), at elevations of approximately 850-975 m (2,790-3,200 ft). An occurrence of V. lanaiensis was known in the late 1970s along the summit road near the head of Waialala Gulch where a population of approximately 20 individuals flourished. That population has since disappeared due to habitat disturbance. Five populations are currently known from southern Lanai: in Kunoa Gulch; between Kunoa and Waialala Gulches; in the upper end of the northernmost drainage of Awehi Gulch; in Hauola Gulch, and along Hauola Trail. It is estimated that the populations total less than 500 plants (GDSI 2000; HINHP Database 2000).
The habitat of Viola lanaiensis is Metrosideros polymorpha-Dicranopteris linearis lowland wet forest or lowland mesic shrubland. It has been observed on moderate to steep slopes from lower gulches to ridgetops, from 670-975 m (2,200-3,200 ft) elevation, with a soil and decomposed rock substrate in open to shaded areas. It was once observed growing from crevices in drier soil on a mostly open rock area near a recent landslide. Associated vegetation includes ferns and short windswept shrubs or other diverse mesic community members such as Scaevola chamissoniana, Hedyotis terminalis, Hedyotis centranthoides (No common name), Styphelia tameiameiae, Carex sp. (No common name), Ilex anomala, Psychotria sp., Antidesma sp., Coprosma sp., Freycinetia arborea, Myrsine sp., Nestegis sp. (olopua), Psychotria sp., and Xylosma sp. (maua) (Service 1995; 56 FR 47686).
The main threats to Viola lanaiensis include browsing and habitat disturbance by axis deer; encroaching alien plant species such as Leptospermum sp
o common name), Styphelia tameiameiae, Carex sp. (No common name), Ilex anomala, Psychotria sp., Antidesma sp., Coprosma sp., Freycinetia arborea, Myrsine sp., Nestegis sp. (olopua), Psychotria sp., and Xylosma sp. (maua) (Service 1995; 56 FR 47686).
The main threats to Viola lanaiensis include browsing and habitat disturbance by axis deer; encroaching alien plant species such as Leptospermum sp. (No common name); depressed reproductive vigor due to a limited local gene pool; the probable loss of appropriate pollinators; and slugs (Service 1995; 56 FR 47686).
Multi-Island Species
Bonamia menziesii
Bonamia menziesii , a short-lived perennial and a member of the morning-glory family (Convolvulaceae), is a vine with twining branches that are fuzzy when young. This species is the only member of the genus that is endemic to the Hawaiian Islands and differs from other genera in the family by its two styles, longer stems and petioles (a stalk that supports a leaf), and rounder leaves (Austin 1999). Little is known about the life history of this plant. Reproductive cycles, longevity, specific environmental requirements, and limiting factors are unknown.
Historically, Bonamia menziesii was known from Kauai, Oahu, Molokai, West Maui, and Hawaii (HINHP Database 2000). Currently, this species is known from Kauai, Oahu, Maui, Hawaii, and Lanai. On Lanai, the three populations, containing a total of 14 individual plants, are found in the Ahakea and Kanepuu Units of Kanepuu Preserve, and on Puhielelu Ridge (GDSI 2000; HINHP Database 2000).
Bonamia menziesii is found in dry Nestegis sandwicensis-Diospyros sp. (lama) forest and dry Dodonea viscosa shrubland at elevations between 150 and 855 m (490 and 2,800 ft) (Austin 1999; 59 FR 56333). Associated species include Bobea sp. (ahakea), Nesoluma polynesicum, Erythrina sandwicensis, Rauvolfia sandwicensis, Metrosideros polymorpha, Canthium odoratum, Dienella sandwicensis (uki uki), Diospyros sandwicensis (lama), Hedyotis terminalis, Melicope sp
ospyros sp. (lama) forest and dry Dodonea viscosa shrubland at elevations between 150 and 855 m (490 and 2,800 ft) (Austin 1999; 59 FR 56333). Associated species include Bobea sp. (ahakea), Nesoluma polynesicum, Erythrina sandwicensis, Rauvolfia sandwicensis, Metrosideros polymorpha, Canthium odoratum, Dienella sandwicensis (uki uki), Diospyros sandwicensis (lama), Hedyotis terminalis, Melicope sp. (alani), Myoporum sandwicense (naio), Nestegis sandwicense, Pisonia sp. (papalakepau), Pittosporum sp. (hoawa), Pouteria sandwicensis (alaa), and Sapindus oahuensis (lonomea) (HINHP Database 2000; 59 FR 56333).
The primary threats to this species on Lanai are habitat degradation and possible predation by feral pigs (Sus scrofa), goats, axis deer, black-tailed deer (Odocoileus hemionus columbianus), and cattle (Bos taurus); competition with a variety of alien plant species such as Lantana camara, Leucaena leucocephala and Schinus terebinthifolius; and an alien beetle (Physomerus grossipes) (Service 1999; 59 FR 56333).
Centaurium sebaeoides
Centaurium sebaeoides, a member of the gentian family (Gentianaceae), is an annual herb with fleshy leaves and stalkless flowers. This species is distinguished from Centaurium erythraea, which is naturalized in Hawaii, by its fleshy leaves and the unbranched arrangement of the flower cluster (56 FR 55770; Wagner et al. 1999).
Centaurium sebaeoides has been observed flowering in April. Flowering may be induced by heavy rainfall. Populations are found in dry areas, and plants are more likely to be found following heavy rains (Service 1999).
Historically and currently, Centaurium sebaeoides is known from Kauai, Oahu, Molokai, Lanai, and Maui (Wagner et al. 1999). On Lanai, there is one population containing between 20 and 30 individual plants in Maunalei Valley (HINHP Database 2000). This species is found on dry ledges around 210 m (690 ft) elevation. Associated species include Hibiscus brackenridgei (HINHP Database 2000)
ice 1999).
Historically and currently, Centaurium sebaeoides is known from Kauai, Oahu, Molokai, Lanai, and Maui (Wagner et al. 1999). On Lanai, there is one population containing between 20 and 30 individual plants in Maunalei Valley (HINHP Database 2000). This species is found on dry ledges around 210 m (690 ft) elevation. Associated species include Hibiscus brackenridgei (HINHP Database 2000).
The major threats to this species on Lanai are competition from alien plant species (HINHP Database 2000).
Clermontia oblongifolia ssp. mauiensis
Clermontia oblongifolia ssp. mauiensis, a short-lived perennial and a member of the bellflower family (Campanulaceae), a shrub or tree with oblong to lance-shaped leaves on leaf stalks (petioles). Clermontia oblongifolia is distinguished from other members of the genus by its calyx and corolla, which are similar in color and are each fused into a curved tube that falls off as the flower ages. The species is also distinguished by the leaf shape, the male floral parts, the shape of the flower buds, and the lengths of the leaf and flower stalks, the flower, and the smooth green basal portion of the flower (the hypanthium) (Lammers 1988, 1999; 57 FR 20772). Clermontia oblongifolia ssp. mauiensis is reported from Maui and Lanai, while C. o. ssp. oblongifolia is only known from Oahu, and C. o. ssp. brevipes is only known from Molokai.
Clermontia oblongifolia ssp. mauiensis is known to flower from November to July (Rock 1919). Little is known regarding pollination vectors, seed dispersal, or other factors.
Historically and currently, Clermontia oblongifolia ssp. mauiensis is known from Lanai and Maui (Lammers 1999; 57 FR 20772). On Lanai, an unknown number of individuals are reported from Kaiholena Gulch (HINHP Database 2000).
This plant typically grows on the sides of ridges in Metrosideros polymorpha dominated lowland wet forest at elevations between 800-900 m (2,625-2,950 ft)
r other factors.
Historically and currently, Clermontia oblongifolia ssp. mauiensis is known from Lanai and Maui (Lammers 1999; 57 FR 20772). On Lanai, an unknown number of individuals are reported from Kaiholena Gulch (HINHP Database 2000).
This plant typically grows on the sides of ridges in Metrosideros polymorpha dominated lowland wet forest at elevations between 800-900 m (2,625-2,950 ft). Associated native species include Coprosma sp., Clermontia sp., Hedyotis sp., and Melicope sp. (HINHP Database 2000).
The threats to this species on Lanai are the small number of populations and individuals which make it vulnerable to extinction from a single natural or human-caused environmental disturbance; depressed reproductive vigor; and habitat degradation by feral pigs (57 FR 20772; Service 1997).
Ctenitis squamigera
Ctenitis squamigera, a short-lived perennial and a member of the wood fern family (Dryopteridaceae) (Wagner and Wagner 1992). It has a rhizome (horizontal stem), creeping above the ground and densely covered with scales similar to those on the lower part of the leaf stalk. It can be readily distinguished from other Hawaiian species of Ctenitis by the dense covering of tan-colored scales on its frond (Wagner and Wagner 1992). Reproductive cycles, longevity, specific environmental requirements and limiting factors are unknown.
Historically, Ctenitis squamigera was recorded from Kauai, Oahu, Molokai, Maui, Lanai, and the island of Hawaii (HINHP Database 2000). Currently, it is found on Oahu, Lanai, West Maui, and Molokai (HINHP Database 2000; 59 FR 49025). There are three populations totaling 42 individual plants on Lanai in the Waiapaa-Kapohaku area on the leeward side of the island, Lopa Gulch, and Waiopa Gulch on the windward side (GDSI 2000; HINHP Database 2000).
This species is found in the forest understory at elevations of 380 to 917 m (1,250 to 3,010 ft) in diverse mesic forest and scrubby mixed mesic forest (HINHP Database 2000)
R 49025). There are three populations totaling 42 individual plants on Lanai in the Waiapaa-Kapohaku area on the leeward side of the island, Lopa Gulch, and Waiopa Gulch on the windward side (GDSI 2000; HINHP Database 2000).
This species is found in the forest understory at elevations of 380 to 917 m (1,250 to 3,010 ft) in diverse mesic forest and scrubby mixed mesic forest (HINHP Database 2000). Associated native plant taxa include Nestegis sandwicensis, Coprosma sp., Sadleria sp., Selaginella sp. (lepelepe a moa), Carex meyenii (No common name), Blechnum occidentale (No common name), Pipturus sp., Melicope sp., Pneumatopteris sandwicensis (No common name), Pittosporum sp., Alyxia oliviformis (maile), Freycinetia arborea, Antidesma sp., Cyrtandra sp., Peperomia sp. (ala ala wai nui), Myrsine sp., Psychotria sp., Metrosideros polymorpha, Syzygium sandwicensis (ohia ha), Wikstroemia sp., Microlepia sp. (No common name), Doodia sp., Boehmeria grandis (akolea), Nephrolepis sp. (kupukupu), Perrotettia sandwicensis, and Xylosma sp. (HINHP 2000, 59 FR 49025).
The primary threats to this species on Lanai are habitat degradation by feral pigs, goats, and axis deer; competition with alien plant taxa, especially Psidium cattleianum and Schinus terebinthifolius ; fire; decreased reproductive vigor and extinction from naturally occurring events due to the small number of existing populations and individuals (Service 1998; Culliney 1988; HINHP Database 2000; 59 FR 49025).
Cyanea grimesiana ssp. grimesiana
Cyanea grimesiana ssp. grimesiana, a short-lived perennial and a member of the bellflower family (Campanulaceae), is a shrub with pinnately divided leaves. This species is distinguished from others in this endemic Hawaiian genus by the pinnately lobed leaf margins and the width of the leaf blades. This subspecies is distinguished from the other two subspecies by the shape and size of the calyx lobes which overlap at the base (Lammers 1999).
Little is known about the life history of this plant
ampanulaceae), is a shrub with pinnately divided leaves. This species is distinguished from others in this endemic Hawaiian genus by the pinnately lobed leaf margins and the width of the leaf blades. This subspecies is distinguished from the other two subspecies by the shape and size of the calyx lobes which overlap at the base (Lammers 1999).
Little is known about the life history of this plant. On Molokai, flowering plants have been reported in July and August. Reproductive cycles, longevity, specific environmental requirements, and limiting factors are unknown.
Historically and currently, Cyanea grimesiana ssp. grimesiana is known from Oahu, Molokai, Lanai, and Maui (61 FR 53108; Service 1999). Currently, on Lanai there are two populations with at least three individuals in Kaiholena Gulch and Waiakeakua Gulch (HINHP Database 2000).
This species is typically found in mesic forest often dominated by Metrosideros polymorpha or M. polymorpha and Acacia koa (koa), or on rocky or steep slopes of stream banks, at elevations between 350 and 945 m (1,150 and 3,100 ft). Associated plants include Antidesma sp., Bobea sp., Myrsine sp., Nestegis sandwicensis, Psychotria sp., and Xylosma sp. (61 FR 53108; Service 1999).
The threats to this species on Lanai are habitat degradation and/or destruction caused by feral axis deer, goats, and pigs; competition with various alien plants; randomly naturally occurring events causing extinction due to the small number of existing individuals; fire; landslides; rats (Rattus rattus) ; and various slugs (59 FR 53108; Service 1999).
Cyrtandra munroi
Cyrtandra munroi, a short-lived perennial and a member of the African violet family (Gesneriaceae). It is a shrub with opposite, elliptic to almost circular leaves which are sparsely to moderately hairy on the upper surface and covered with velvety, rust-colored hairs underneath
ndividuals; fire; landslides; rats (Rattus rattus) ; and various slugs (59 FR 53108; Service 1999).
Cyrtandra munroi
Cyrtandra munroi, a short-lived perennial and a member of the African violet family (Gesneriaceae). It is a shrub with opposite, elliptic to almost circular leaves which are sparsely to moderately hairy on the upper surface and covered with velvety, rust-colored hairs underneath. This species is distinguished from other species of the genus by the broad opposite leaves, the length of the flower cluster stalks, the size of the flowers, and the amount of hair on various parts of the plant (Wagner et al. 1999).
Some work has been done on the reproductive biology of some species of Cyrtandra (Service 1995), but not on C. munroi specifically. Studies indicate that a specific pollinator may be necessary for successful pollination. Seed dispersal may be via birds which eat the fruits (Service 1995). Flowering time, longevity of plants and seeds, specific environmental requirements, and other limiting factors are unknown.
Historically and currently, Cyrtandra munroi is known from Lanai and Maui (HINHP Database 2000; Wagner et al. 1999). Currently, on Lanai there are a total of two populations containing 17 individuals in the Kapohaku/Waiapaa area, and the gulch between Kunoa and Waialala gulches (GDSI 2000; HINHP Database 2000).
The habitat of this species is diverse mesic forest, wet Metrosideros polymorpha forest, and mixed mesic M. polymorpha forest, typically on rich, moist to wet, moderately steep talus slopes from 300 to 920 m (980-3,020 ft). It occurs on soil and rock substrates on slopes from watercourses in gulch bottoms and up the sides of gulch slopes to near ridgetops. Associated native species include, Diplopterygium pinnatum, Diospyros sp., Hedyotis acuminata (au), Clermontia sp., Alyxia oliviformis, Bobea sp., Coprosma sp., Dicranopteris linearis, Freycinetia arborea, Melicope sp., Myrsine sp., Perrottetia sandwicensis, Pipturus sp., Pittosporum sp., Pleomele sp
s on slopes from watercourses in gulch bottoms and up the sides of gulch slopes to near ridgetops. Associated native species include, Diplopterygium pinnatum, Diospyros sp., Hedyotis acuminata (au), Clermontia sp., Alyxia oliviformis, Bobea sp., Coprosma sp., Dicranopteris linearis, Freycinetia arborea, Melicope sp., Myrsine sp., Perrottetia sandwicensis, Pipturus sp., Pittosporum sp., Pleomele sp. (hala pepe), Pouteria sandwicensis, Psychotria sp., Sadleria sp., Scaevola sp., Xylosma sp., and other Cyrtandra spp. (HINHP Database 2000; Service 1995).
The threats to this species on Lanai are browsing and habitat disturbance by axis deer; competition with the alien plant species Psidium cattleianum, Myrica faya, Leptospermum scoparium, Pluchea symphytifolia (sourbush), Melinis minutiflora (molasses grass), Rubus rosifolius (thimbleberry), and Paspalum conjugatum (Hilo grass); a very small number of extant individuals which can cause depressed reproductive vigor; and loss of appropriate pollinators (Service 1995; 57 FR 20772).
Hedyotis mannii
Hedyotis mannii, a short-lived perennial and a member of the coffee family (Rubiaceae). It is a perennial plant with smooth, usually erect stems 30 to 60 cm (1 to 2 ft) long which are woody at the base and four-angled or -winged. This species' growth habit; its quadrangular or winged stems; the shape, size, and texture of its leaves; and its dry capsule which opens when mature separate it from other species of the genus (Wagner et al. 1999).
Little is known about the life history of this plant. Reproductive cycles, longevity, specific environmental requirements, and limiting factors are unknown (Service 1996a).
Hedyotis mannii was once widely scattered on Lanai, West Maui, and Molokai (HINHP Database 2000). After a hiatus of 50 years, this species was rediscovered in 1987 by Steve Perlman on Molokai (HINHP Database 2000; Service 1996a)
tle is known about the life history of this plant. Reproductive cycles, longevity, specific environmental requirements, and limiting factors are unknown (Service 1996a).
Hedyotis mannii was once widely scattered on Lanai, West Maui, and Molokai (HINHP Database 2000). After a hiatus of 50 years, this species was rediscovered in 1987 by Steve Perlman on Molokai (HINHP Database 2000; Service 1996a). In addition, two populations, now numbering between 35 and 40 individual plants, were discovered on Lanai in 1991 in Maunalei and Hauola gulches (GDSI 2000; HINHP Database 2000; Service 1996a).
Hedyotis mannii typically grows on dark, narrow, rocky gulch walls and on steep stream banks in wet forests at 150 to 1,050 m (490 to 3,450 ft) in elevation (HINHP Database 2000; Service 1996a). Associated plant species include Sadleria sp., Selaginella sp., Broussaisia arguta, Labordia sp., Cyrtandra sp., Scaevola sp., Freycinetia arborea, Blechnum occidentale, Pipturis sp., Carex meyenii, Pneumatopteris sandwicensis, Cibotium sp. (hapuu), Cyanea sp. (haha), and Psychotria sp. (HINHP Database 2000).
The limited number of individuals of Hedyotis mannii makes it extremely vulnerable to extinction from random environmental events. Feral pigs and alien plants such as Melinis minutiflora, Psidium cattleianum, and Rubus rosifolius degrade the habitat of this species and contribute to its vulnerability (57 FR 46325).
Hibiscus brackenridgei
Hibiscus brackenridgei, a short-lived perennial and a member of the mallow family (Malvaceae), is a sprawling to erect shrub or small tree. This species differs from other members of the genus in having the following combination of characteristics: Yellow petals, a calyx consisting of triangular lobes with raised veins and a single midrib, bracts attached below the calyx, and thin stipules that fall off, leaving an elliptic scar. Two subspecies are currently recognized, H. brackenridgei ssp. brackenridgei and H. brackenridgei ssp. mokuleianus (Bates 1999)
from other members of the genus in having the following combination of characteristics: Yellow petals, a calyx consisting of triangular lobes with raised veins and a single midrib, bracts attached below the calyx, and thin stipules that fall off, leaving an elliptic scar. Two subspecies are currently recognized, H. brackenridgei ssp. brackenridgei and H. brackenridgei ssp. mokuleianus (Bates 1999).
Hibiscus brackenridgei is known to flower continuously from early February through late May, and intermittently at other times of year. Intermittent flowering may possibly be tied to day length (Service 1999). Little else is known about the life history of this plant. Pollination biology, longevity, specific environmental requirements, and limiting factors are unknown.
Historically, Hibiscus brackenridgei was known from Kauai, Oahu, Lanai, Maui, Molokai, and Hawaii (HINHP Database 2000; Service 1999). Hibiscus was collected from an undocumented site on Kahoolawe though the subspecies has never been determined (Service 1999). Currently, H. b. ssp. mokuleianus is known from Oahu and from undocumented observations on Kauai (Bates 1999; Service 1999). Hibiscus brackenridgei ssp. brackenridgei is currently known from Lanai, Maui, and Hawaii. On Lanai, there are a total of three populations containing an unknown number of individuals, one population is known from Keamuku Road, one from a fenced area on the dry plains of Kaena Point, and a population that was initially outplanted and now appears to be reproducing naturally in Kanepuu Preserve (GDSI 2000; HINHP Database 2000; Wesley Wong, Jr., formerly of Hawaii Division of Forestry and Wildlife (DOFAW), in litt. 1998).
Hibiscus brackenridgei ssp. brackenridgei occurs in lowland dry to mesic forest and shrubland from sea level to 800 m (2,625 ft) in elevation (Bates 1999; HINHP Database 2000). Associated plant species include Dodonea viscosa, Canthium odoratum, Eurya sandwicensis (anini), Isachne distichophylla (ohe), and Sida fallax (HINHP Database 2000)
vision of Forestry and Wildlife (DOFAW), in litt. 1998).
Hibiscus brackenridgei ssp. brackenridgei occurs in lowland dry to mesic forest and shrubland from sea level to 800 m (2,625 ft) in elevation (Bates 1999; HINHP Database 2000). Associated plant species include Dodonea viscosa, Canthium odoratum, Eurya sandwicensis (anini), Isachne distichophylla (ohe), and Sida fallax (HINHP Database 2000).
The primary threats to Hibiscus brackenridgei ssp. brackenridgei on Lanai are habitat degradation; possible predation by pigs, goats, mouflon sheep ( Ovis musimon ), cattle, axis deer, and rats; competition with alien plant species; road construction; fire; and susceptibility to extinction caused by naturally occurring events or reduced reproductive vigor (59 FR 56333).
Melicope munroi
Melicope munroi, a long lived perennial of the citrus family (Rutaceae), is a sprawling shrub up to 3 m (10 ft) tall. The new growth of this species is minutely hairy. This species differs from other Hawaiian members of the genus in the shape of the leaf and the length of the inflorescence (a flower cluster) stalk (Stone et al. 1999). Flowering time, pollination vectors, seed dispersal agents, longevity of plants and seeds, specific environmental requirements, and other limiting factors are unknown.
Historically, this species was known from the Lanaihale summit ridge of Lanai and above Kamalo on Molokai. Currently, Melicope munroi is only known from the Lanaihale summit ridge on Lanai (HINHP Database 2000; GDSI 2000). There are four scattered populations totaling an estimated 300 to 800 individuals on the Lanaihale summit, head of Hauola gulch, Waialala gulch, and the ridge of Waialala gulch (HINHP Database 2000; 64 FR 48307).
Melicope munroi is typically found on slopes in lowland wet shrublands, at elevations of 790 to 1,020 m (2,600 to 3,350 ft)
ihale summit ridge on Lanai (HINHP Database 2000; GDSI 2000). There are four scattered populations totaling an estimated 300 to 800 individuals on the Lanaihale summit, head of Hauola gulch, Waialala gulch, and the ridge of Waialala gulch (HINHP Database 2000; 64 FR 48307).
Melicope munroi is typically found on slopes in lowland wet shrublands, at elevations of 790 to 1,020 m (2,600 to 3,350 ft). Associated native plant taxa include Diplopterygium pinnatum, Dicranopteris linearis, Metrosideros polymorpha, Cheirodendron trigynum (olapa), Coprosma sp., Broussaisia arguta, other Melicope sp., and Machaerina angustifolia (uki) (HINHP Database 2000).
The major threats to Melicope munroi on Lanai are axis deer and the alien plant taxa Leptospermum scoparium and Psidium cattleianum (HINHP Database 2000). Random environmental events also threaten the one remaining population (64 FR 48307).
Portulaca sclerocarpa
Portulaca sclerocarpa of the purslane family (Portulacaceae), is a perennial herb with a fleshy tuberous taproot which becomes woody and has stems up to about 20 cm (8 in.) long. The stalkless, succulent, grayish-green leaves are almost circular in cross-section. Dense tufts of hairs are located in each leaf axil (point of divergence between a branch or leaf) and underneath the tight clusters of three to six stalkless flowers grouped at the ends of the stems. Sepals (one of the modified leaves comprising a flower calyx) have membranous edges and the petals are white, pink, or pink with a white base. The hardened capsules open very late or not at all, and contain glossy, dark reddish-brown seeds. This species differs from other native and naturalized species of the genus in Hawaii by its woody taproot, its narrow leaves, and the colors of its petals and seeds. Its closest relative, P. villosa, differs mainly in its thinner-walled, opening capsule (Wagner et al. 1999).
This species was observed in flower during March 1977, December 1977, and June 1978
ain glossy, dark reddish-brown seeds. This species differs from other native and naturalized species of the genus in Hawaii by its woody taproot, its narrow leaves, and the colors of its petals and seeds. Its closest relative, P. villosa, differs mainly in its thinner-walled, opening capsule (Wagner et al. 1999).
This species was observed in flower during March 1977, December 1977, and June 1978. The presence of juveniles indicated that pollination and germination were occurring (Service 1996b). Pollination vectors, seed dispersal agents, longevity of plants and seeds, specific environmental requirements, and other limiting factors are unknown.
Historically and currently, Portulaca sclerocarpa is found on an islet off the south coast of the island of Lanai, and on the island of Hawaii. The population on Poopoo Islet off the coast of Lanai contains about 10 plants (HINHP Database 2000; GDSI 2000; Service 1996b). This species grows on exposed ledges in thin soil in coastal communities (Wagner et al. 1999; HINHP Database 2000).
The major threats to Portulaca sclerocarpa on Lanai are herbivory (feeding on plants) by the larvae of an introduced sphinx moth ( Hyles lineata ) (Frank Howarth, Bishop Museum, in litt 2000); competition from introduced plants; and fire (59 FR 10305).
Spermolepis hawaiiensis
Spermolepis hawaiiensis, a member of the parsley family (Apiaceae), is a slender annual herb with few branches. Its leaves, dissected into narrow, lance-shaped divisions, are oblong to somewhat oval in outline and grow on stalks. Flowers are arranged in a loose, compound umbrella-shaped inflorescence arising from the stem, opposite the leaves. Spermolepis hawaiiensis is the only member of the genus native to Hawaii. It is distinguished from other native members of the family by being a non-succulent annual with an umbrella-shaped inflorescence (Constance and Affolter 1999). Little is known about the life history of S. hawaiiensis
are arranged in a loose, compound umbrella-shaped inflorescence arising from the stem, opposite the leaves. Spermolepis hawaiiensis is the only member of the genus native to Hawaii. It is distinguished from other native members of the family by being a non-succulent annual with an umbrella-shaped inflorescence (Constance and Affolter 1999). Little is known about the life history of S. hawaiiensis. Reproductive cycles, longevity, specific environmental requirements, and limiting factors are unknown (Service 1999).
Historically, Spermolepis hawaiiensis was known from Kauai, Oahu, Lanai, and the island of Hawaii (HINHP Database 2000). Currently it is extant on Kauai, Oahu, Molokai, Lanai, West Maui, and Hawaii (59 FR 56333; HINHP Database 2000). On Lanai, this species is known from three populations of 350 to 400 individuals: in the southern edge of Kapoho Gulch, Kamiki Ridge, and around 274 m (900 ft.) downslope of Puu Manu (HINHP Database 2000; Robert Hobdy, DOFAW, pers. comm. 2000).
Spermolepis hawaiiensis is known from rocky, steep slopes growing on ledges and pockets between elevations of 335 and 396 m (1,100 and 1,300 ft). Associated native plant species include Dodonea viscosa, Panicum spp. (panic grass), Heteropogon contortus (pili grass), Lipochaeta lavarum (nehe), and Reyoldsia sandwicensis (ohe) (HINHP Database 2000; R. Hobdy, pers. comm. 2000).
The primary threats to Spermolepis hawaiiensis on Lanai are habitat degradation by feral goats, competition with various alien plants such as Lantana camara; and erosion, landslides, and rockslides due to natural weathering which result in the death of individual plants as well as habitat destruction (59 FR 56333; Service 1999; R. Hobdy, pers. comm. 2000).
Tetramolopium remyi
Tetramolopium remyi, a short-lived perennial member of the sunflower family (Asteraceae), is a much branched, decumbent (reclining, with the end ascending) or occasionally erect shrub up to about 38 cm (15 in.) tall
due to natural weathering which result in the death of individual plants as well as habitat destruction (59 FR 56333; Service 1999; R. Hobdy, pers. comm. 2000).
Tetramolopium remyi
Tetramolopium remyi, a short-lived perennial member of the sunflower family (Asteraceae), is a much branched, decumbent (reclining, with the end ascending) or occasionally erect shrub up to about 38 cm (15 in.) tall. Its leaves are firm, very narrow, and with the edges rolled inward when the leaf is mature. There is a single flower head per branch. The heads are each comprised of 70 to 100 yellow disk and 150 to 250 white ray florets. The stems, leaves, flower bracts, and fruit are covered with sticky hairs. Tetramolopium remyi has the largest flower heads in the genus. Two other species of the genus are known historically from Lanai, but both have purplish rather than yellow disk florets and from 4 to 60 rather than 1 flower head per branch (Lowrey 1999).
Tetramolopium remyi flowers between April and January (Lowrey 1986). Field observations suggest that the population size of the species can be profoundly affected by variability in annual precipitation; the adult plants may succumb to prolonged drought, but apparently there is a seedbank in the soil that can replenish the population during favorable conditions (Lowrey 1986; Service 1995). Such seed banks are of great importance for arid-dwelling plants to allow populations to persist through adverse conditions. The aridity of the area, possibly coupled with human-induced changes in the habitat and subsequent lack of availability of suitable sites for seedling establishment, may be a factor limiting population growth and/or expansion. Requirements of this taxon in these areas are not known, but success in greenhouse cultivation of these plants with much higher water availability implies that, although these plants are drought-tolerant, perhaps the dry conditions in which they currently exist are not optimum. Individual plants are probably not long-lived (Lowrey 1986)
may be a factor limiting population growth and/or expansion. Requirements of this taxon in these areas are not known, but success in greenhouse cultivation of these plants with much higher water availability implies that, although these plants are drought-tolerant, perhaps the dry conditions in which they currently exist are not optimum. Individual plants are probably not long-lived (Lowrey 1986). Pollination is hypothesized to be possibly by butterflies, bees, or flies. Seed dispersal agents, environmental requirements, and other limiting factors are unknown (Lowrey 1986; Service 1995).
Historically, the species was known from the Lahaina area of West Maui and Lanai. Currently, Tetramolopium remyi is only known from two populations on Lanai: one near Awalua Road and the other near Awehi Road, with a total of approximately 26 plants (GDSI 2000; HINHP Database 2000).
Tetramolopium remyi is found in red sandy loam soil in dry Dodonea viscosa-Heteropogon contortus communities at an elevation of about 230 m (755 ft). Commonly associated native species include Bidens mauiensis, Waltheria indica (uha loa), Wikstroemia oahuensis (akia), and Lipochaeta lavarum (HINHP Database 2000).
Browsing by deer and mouflon sheep and competition from invading weedy species, primarily Andropogon viginicus (broomsedge) and Panicum maximum (guinea grass), are the main threats to the species on Lanai. The plants are tiny and can easily be displaced and eliminated by invading exotic species. Fire is also a potential threat (Service 1995; 56 FR 47686).
Vigna o-wahuensis
Vigna o-wahuensis, a member of the legume family (Fabaceae), is a slender twining perennial herb with fuzzy stems. Each leaf is made up of three leaflets which vary in shape from round to linear, and are sparsely or moderately covered with coarse hairs. Flowers, in clusters of one to four, have thin, translucent, pale yellow or greenish yellow petals. The two lowermost petals are fused and appear distinctly beaked
, a member of the legume family (Fabaceae), is a slender twining perennial herb with fuzzy stems. Each leaf is made up of three leaflets which vary in shape from round to linear, and are sparsely or moderately covered with coarse hairs. Flowers, in clusters of one to four, have thin, translucent, pale yellow or greenish yellow petals. The two lowermost petals are fused and appear distinctly beaked. The sparsely hairy calyx has asymmetrical lobes. The fruits are long slender pods that may or may not be slightly inflated and contain 7 to 15 gray to black seeds. This species differs from others in the genus by its thin yellowish petals, sparsely hairy calyx, and thin pods which may or may not be slightly inflated (Geesink et al. 1999).
Additional information on the life history of this plant, reproductive cycles, longevity, specific environmental requirements, and limiting factors are generally unknown (Service 1999).
Historically, Vigna o-wahuensis was known from Niihau, Oahu, and Maui (HINHP Database 2000). Currently, V. o-wahuensis is known from the islands of Molokai, Maui, Lanai, Kahoolawe, and Hawaii. There are no currently known populations on Niihau or Oahu (HINHP Database 2000). On Lanai, it is known from a 1986 collection made on the “windward slopes of Kanepuu” (GDSI 2000; HINHP Database 2000; Joel Lau, HINHP, in litt. 2000).
While typically reported from dry grassland and shrubland on Kahoolawe, Molokai, and Hawaii, the plant community and associated species, elevation, and threats are unknown on Lanai (HINHP Database 2000; J. Lau, HINHP, in litt. 2000; 59 FR 56333).
A summary of populations and landownership for these 19 plant species on Lanai is given in Table 3.
Table 3.— Summary of Populations and Landownership for 19 Species on Lanai Species Number of current populations Landownership Federal State Private Abutilon eremitopetalum 1 X Bonamia menziesii 3 X Centaurium sebaeoides 1 X Clermontia oblongifolia ssp. mauiensis 1 X Ctenitis squamigera 3 X Cyanea grimesiana ssp
pulations and landownership for these 19 plant species on Lanai is given in Table 3.
Table 3.— Summary of Populations and Landownership for 19 Species on Lanai Species Number of current populations Landownership Federal State Private Abutilon eremitopetalum 1 X Bonamia menziesii 3 X Centaurium sebaeoides 1 X Clermontia oblongifolia ssp. mauiensis 1 X Ctenitis squamigera 3 X Cyanea grimesiana ssp. grimesiana 2 X Cyanea macrostegia ssp. gibsonii 7 X Cyrtandra munroi 2 X Gahnia lanaiensis 3 X Hedyotis mannii 2 X Hedyotis schlechtendahliana var. remyi 3 X Hibiscus brackenridgei 3 X Labordia tinifolia var. lanaiensis 3 X Melicope munroi 4 X Portulaca sclerocarpa 1 X Spermolepis hawaiiensis 3 X Tetramolopium remyi 2 X Vigna o-wahuensis 1 X Viola lanaiensis 5 X Previous Federal Action
Federal action on these plants began as a result of section 12 of the Act, which directed the Secretary of the Smithsonian Institution to prepare a report on plants considered to be endangered, threatened, or extinct in the United States. This report, designated as House Document No. 94-51, was presented to Congress on January 9, 1975. In that document, Bonamia menziesii, Gahnia lanaiensis, Hedyotis mannii (as Hedyotis thyrsoidea var. thyrsoidea ), Hibiscus brackenridgei (as Hibiscus brackenridgei var. brackenridgei, var. mokuleianus, and var. “from Hawaii”), Portulaca sclerocarpa, Solanum incompletum (as Solanum haleakalense and Solanum incompletum var. glabratum, var. incompletum, and var. mauiensis ), Vigna o-wahuensis (as Vigna sandwicensis var. heterophylla and var. sandwicensis ), and Viola lanaiensis were considered endangered; Cyrtandra munroi and Labordia tinifolia var. lanaiensis were considered threatened; and, Abutilon eremitopetalum, Ctenitis squamigera, Cyanea macrostegia ssp. gibsonii, Melicope munroi (as Pelea munroi ), and Tetramolopium remyi were considered to be extinct
ensis ), Vigna o-wahuensis (as Vigna sandwicensis var. heterophylla and var. sandwicensis ), and Viola lanaiensis were considered endangered; Cyrtandra munroi and Labordia tinifolia var. lanaiensis were considered threatened; and, Abutilon eremitopetalum, Ctenitis squamigera, Cyanea macrostegia ssp. gibsonii, Melicope munroi (as Pelea munroi ), and Tetramolopium remyi were considered to be extinct.
On July 1, 1975, we published a notice in the Federal Register (40 FR 27823) of our acceptance of the Smithsonian report as a petition within the context of section 4(c)(2) (now section 4(b)(3)) of the Act, and giving notice of our intention to review the status of the plant taxa named therein. As a result of that review, on June 16, 1976, we published a proposed rule in the Federal Register (41 FR 24523) to determine endangered status pursuant to section 4 of the Act for approximately 1,700 vascular plant taxa, including all of the above taxa except Cyrtandra munroi, Labordia tinifolia var. lanaiensis, and Melicope munroi. The list of 1,700 plant taxa was assembled on the basis of comments and data received by the Smithsonian Institution and the Service in response to House Document No. 94-51 and the July 1, 1975, Federal Register publication.
General comments received in response to the 1976 proposal are summarized in an April 26, 1978, Federal Register publication (43 FR 17909). In 1978, amendments to the Act required that all proposals over 2 years old be withdrawn, and a 1-year grace period was given to proposals already over 2 years old. On December 10, 1979, we published a notice in the Federal Register (44 FR 70796) withdrawing the portion of the June 16, 1976, proposal that had not been made final, along with four other proposals that had expired. We published updated notices of review for plants on December 15, 1980 (45 FR 82479), September 27, 1985 (50 FR 39525), February 21, 1990 (55 FR 6183), September 30, 1993 (58 FR 51144), February 28, 1996 (61 FR 7596), and September 19, 1997 (62 FR 49398)
FR 70796) withdrawing the portion of the June 16, 1976, proposal that had not been made final, along with four other proposals that had expired. We published updated notices of review for plants on December 15, 1980 (45 FR 82479), September 27, 1985 (50 FR 39525), February 21, 1990 (55 FR 6183), September 30, 1993 (58 FR 51144), February 28, 1996 (61 FR 7596), and September 19, 1997 (62 FR 49398). A summary of the status categories for these Lanai plant species in the 1980-1997 notices of review can be found in Table 4(a).
The 20 plants at issue in this proposed rule were listed as endangered species under the Act between 1991 and 1999. A summary of the listing actions can be found in Table 4(b). At the time 17 of these plants were listed, we determined that designation of critical habitat was not prudent because designation would increase the degree of threat to the species and/or would not benefit the plant. These not prudent determinations, along with 229 others, were challenged in Conservation Council for Hawaii v. Babbitt 2 F. Supp. 2d 1280 (D. Haw.1998). On March 9, 1998, the United States District Court for the District of Hawaii directed us to review the prudency determinations for 245 listed plant species in Hawaii, including these species (2 F. Supp. 2d 1280 (D. Haw. 1998)). Among other things, the court held that in most cases we did not sufficiently demonstrate that the species are threatened by human activity or that such threats would increase with the designation of critical habitat. The court also held that we failed to balance any risks of designating critical habitat against any benefits ( Id. at 1283-1285). For example, the court suggested that, before concluding critical habitat would not be prudent, we should consider whether designation might prevent an inadvertent act of destruction by educating the public
hreats would increase with the designation of critical habitat. The court also held that we failed to balance any risks of designating critical habitat against any benefits ( Id. at 1283-1285). For example, the court suggested that, before concluding critical habitat would not be prudent, we should consider whether designation might prevent an inadvertent act of destruction by educating the public.
Regarding our determination that designating critical habitat would have no additional benefits to the species above and beyond those already provided through the section 7 consultation requirement of the Act, the court ruled that we failed to consider the specific effect of the consultation requirement on each species ( Id. at 1286-88). In addition, the court stated that we did not consider benefits outside of the consultation requirements. In the court's view, these potential benefits include substantive and procedural protections. The court held that substantively, designation establishes a “uniform protection plan” prior to consultation and indicates where compliance with section 7 of the Act is required. Procedurally, the court stated that the designation of critical habitat educates the public and State and local governments and affords them an opportunity to participate in the designation ( Id. at 1288). The court also stated that private lands may not be excluded from critical habitat designation even though section 7 requirements apply only to Federal agencies. In addition to the potential benefit of informing the public and State and local governments of the listing and of the areas that are essential to the species' conservation, the court found that there may be Federal activity on the private property in the future, even though no such activity may be occurring there at the present ( Id. at 1285-88)
tion 7 requirements apply only to Federal agencies. In addition to the potential benefit of informing the public and State and local governments of the listing and of the areas that are essential to the species' conservation, the court found that there may be Federal activity on the private property in the future, even though no such activity may be occurring there at the present ( Id. at 1285-88). On August 10, 1998, the court ordered us to publish proposed critical habitat designations or non-designations for at least 100 species by November 30, 2000, and to publish proposed designations or non-designations for the remaining 145 species by April 30, 2002.
At the time we listed Hedyotis schlechtendahliana var. remyi, Labordia tinifolia var. lanaiensis, and Melicope munroi (64 FR 48307), we determined that designation of critical habitat was prudent and that we would develop critical habitat designations for these three taxa, along with seven others from Maui, Molokai, Lanai, or Kahoolawe (the Maui Nui species), at the same time we developed the designations for the 245 Hawaiian plant species. In Conservation Council for Hawaii v. Babbitt, CIV No. 99—000283 HG (D. Haw. August 19, 1999, February 16, 2000, and March 28, 2000), the court ordered us to publish proposed critical habitat designations for these 10 Maui
To comply with the court orders, between now and April 30, 2002, we plan to publish seven notices of determinations of whether critical habitat is prudent, along with proposed rules as appropriate, in the following groupings: Kauai and Niihau; Maui and Kahoolawe; Lanai; Molokai; Northwest Hawaiian Islands; Hawaii; and Oahu. Each notice will contain proposed prudency determinations for species occurring on that island for which prudency determinations have not previously been proposed. Each proposed rule will also contain proposed designations or non-designations of critical habitat for each plant species known to occur from that island
Maui and Kahoolawe; Lanai; Molokai; Northwest Hawaiian Islands; Hawaii; and Oahu. Each notice will contain proposed prudency determinations for species occurring on that island for which prudency determinations have not previously been proposed. Each proposed rule will also contain proposed designations or non-designations of critical habitat for each plant species known to occur from that island. Thus, a species that occurs on multiple islands may have critical habitat proposed in multiple rules.
The proposed prudency determinations and proposed rules for Kauai and Niihau were published in the Federal Register on November 7, 2000 (65 FR 66807). Proposals for Maui and Kahoolawe are being published concurrently with this rule.
Section 4(a)(3) of the Act, as amended, and implementing regulations (50 CFR 424.12) require that, to the maximum extent prudent and determinable, the Secretary designate critical habitat at the time the species is determined to be endangered or threatened. Our regulations (50 CFR 424.12(a)(1)) state that designation of critical habitat is not prudent when one or both of the following situations exist: (1) The species is threatened by taking or other human activity, and identification of critical habitat can be expected to increase the degree of threat to the species, or (2) such designation of critical habitat would not be beneficial to the species. At the time each plant was listed, we determined that designation of critical habitat was prudent for three of these plants ( Hedyotis schlechtendahliana var. remyi, Labordia tinifolia ssp. lanaiensis, and Melicope munroi ) and not prudent for the other plants because it would not benefit the plant and/or would increase the degree of threat to the species.
On November 30, 1998, we published a notice in the Federal Register requesting public comments on our reevaluation of whether designation of critical habitat is prudent for the 245 Hawaiian plants at issue (63 FR 65805)
olia ssp. lanaiensis, and Melicope munroi ) and not prudent for the other plants because it would not benefit the plant and/or would increase the degree of threat to the species.
On November 30, 1998, we published a notice in the Federal Register requesting public comments on our reevaluation of whether designation of critical habitat is prudent for the 245 Hawaiian plants at issue (63 FR 65805). The comment period closed on March 1, 1999, and was reopened from March 24, 1999, to May 24, 1999 (64 FR 14209). We received over 100 responses from individuals, non-profit organizations, the State of Hawaii's Division of Forestry and Wildlife, county governments, and Federal agencies (U.S. Department of Defense—Army, Navy, Air Force). Only a few responses offered information on the status of individual plant species or on current management actions for one or more of the 245 Hawaiian plants. While many of the respondents expressed support for the designation of critical habitat for 245 Hawaiian plants, more than 80 percent opposed the designation of critical habitat for these plants. In general, these respondents opposed designation because they believed it will cause economic hardship, chill cooperative projects, polarize relationships with hunters, or potentially increase trespass or vandalism on private lands. In addition, commenters also cited a lack of information on the biological and ecological needs of these plants which they believed may lead to designation based on guesswork. The respondents who supported the designation of critical habitat cited that designation will—(1) provide a uniform protection plan for the Hawaiian Islands; (2) promote funding for management of these plants; (3) educate the public and State government; and (4) protect partnerships with landowners and build trust
eeds of these plants which they believed may lead to designation based on guesswork. The respondents who supported the designation of critical habitat cited that designation will—(1) provide a uniform protection plan for the Hawaiian Islands; (2) promote funding for management of these plants; (3) educate the public and State government; and (4) protect partnerships with landowners and build trust.
In early February, 2000, we hand-delivered a letter to representatives of the private landowner on Lanai requesting any information considered germane to the management of any of the 245 plants on the island, and containing a copy of the November 30, 1998, Federal Register notice, a map showing the general locations of the plants on Lanai, and a handout containing general information on critical habitat. On April 4, 2000, we met with representatives of the landowner to discuss their current land management activities. In addition, we met with Maui County DOFAW staff and discussed their management activities on Lanai.
On November 7, 2000, we published the first of the court-ordered prudency determinations and proposed critical habitat designations or non-designations for Kauai and Niihau plants (65 FR 66807). Proposals for Maui and Kahoolawe plants are being published concurrently with this proposal. We proposed that critical habitat was prudent for nine species ( Bonamia menziesii, Centarium sebaeoides, Clermontia oblongifolia ssp. mauiensis, Ctenitis squamigera, Cyanea grimesiana ssp. grimesiana, Cyrtandra munroi, Hibiscus brackenridgei, Spermolepis hawaiiensis, and Vigna o-wahuensis ) from Lanai that also occur on Kauai, Niihau, Maui, and/or Kahoolawe.
Table 4(a).—Summary of Candidacy Status for Plant Species From Lanai Species Federal Register Notice of Review 12/15/80 9/27/85 2/20/90 9/30/93 2/28/96 Abutilon eremitopetalum C1 C1 C1 Bonamia menziesii C1 C1 C1 Centaurium sebaeoides C1 Clermontia oblongifolia ssp. mauiensis C1 Ctenitis squamigera C1* C1* C1* Cyanea grimesiana ssp
m Lanai that also occur on Kauai, Niihau, Maui, and/or Kahoolawe.
Table 4(a).—Summary of Candidacy Status for Plant Species From Lanai Species Federal Register Notice of Review 12/15/80 9/27/85 2/20/90 9/30/93 2/28/96 Abutilon eremitopetalum C1 C1 C1 Bonamia menziesii C1 C1 C1 Centaurium sebaeoides C1 Clermontia oblongifolia ssp. mauiensis C1 Ctenitis squamigera C1* C1* C1* Cyanea grimesiana ssp. grimesiana C1 C1 C2 Cyanea macrostegia ssp. gibsonii C1 C1 C1 Cyrtandra munroi C2 C2 C1 Gahnia lanaiensis C1 C1 C1 Hedyotis mannii C1* C1* C1 Hedyotis schlechtendahliana var. remyi C2 C2 C Hibiscus brackenridgei C1 C1 C1 Labordia tinifolia var. lanaiensis C2 C2 3C 3C Melicope munroi C1* C1* C2 C2 C Phyllostegia glabra var. lanaiensis C1 C1 C1 Portulaca sclerocarpa C1 C1 C1 Spermolepis hawaiiensis C1 Tetramolopium remyi C1 C1 C1 Vigna o-wahuensis C1 C1 C1 Viola lanaiensis C1 C1 C1 Key: C: Taxa for which the Service has on file sufficient information on the biological vulnerability and threat(s) to support proposals to list them as endangered or threatened species. (The 1996 Notice of Review discontinued the use of different categories of candidates (as described below; candidates were redefined as species meeting the definition of former C1 species.) C1: Taxa for which the Service has on file enough sufficient information on biological vulnerability and threat(s) to support proposals to list them as endangered or threatened species. C1*: Taxa of known vulnerable status in the recent past that may already have become extinct. C2: Taxa for which there is some evidence of vulnerability, but for which there are not enough data to support listing proposals at this time. 3A: Taxa for which the Service has persuasive evidence of extinction. If rediscovered, such taxa might acquire high priority for listing
red or threatened species. C1*: Taxa of known vulnerable status in the recent past that may already have become extinct. C2: Taxa for which there is some evidence of vulnerability, but for which there are not enough data to support listing proposals at this time. 3A: Taxa for which the Service has persuasive evidence of extinction. If rediscovered, such taxa might acquire high priority for listing. Federal Register Notices of Review
1980: 45 FR 82479 1985: 50 FR 39525 1990: 55 FR 6183 1993: 58 FR 51144 1996: 61 FR 7596 Table 4(b).—Summary of Listing Actions for Plant Species From Lanai Species Federal status Proposed rule Date Federal Register Final rule Date Federal Register Abutilon eremitopetalum E 09/17/90 55 FR 38236 09/20/91 56 FR 47686 Bonamia menziesii E 09/14/93 58 FR 48012 11/10/94 59 FR 56333 Centaurium sebaeoides E 09/28/90 55 FR 39664 10/29/91 56 FR 55770 Clermontia oblongifolia ssp. mauiensis E 05/24/91 56 FR 23842 05/15/92 57 FR 20772 Ctenitis squamigera E 06/24/93 58 FR 34231 09/09/94 59 FR 49025 Cyanea grimesiana ssp. grimesiana E 10/02/95 60 FR 51417 10/10/96 61 FR 53108 Cyanea macrostegia ssp. gibsonii E 09/17/90 55 FR 38236 09/20/91 56 FR 47686 Cyrtandra munroi E 05/24/91 56 FR 23842 05/15/92 57 FR 20772 Gahnia lanaiensis E 09/17/90 55 FR 38236 09/20/91 56 FR 47686 Hedyotis mannii E 09/20/91 56 FR 47718 10/08/92 57 FR 46325 Hedyotis schlechtendahliana var. remyi E 05/15/97 62 FR 26757 09/03/99 64 FR 48307 Hibiscus brackenridgei E 09/14/93 58 FR 48012 11/10/94 59 FR 56333 Labordia tinifolia var. lanaiensis E 05/15/97 62 FR 26757 09/03/99 64 FR 48307 Melicope munroi E 05/15/97 62 FR 26757 09/03/99 64 FR 48307 Phyllostegia glabra var
38236 09/20/91 56 FR 47686 Hedyotis mannii E 09/20/91 56 FR 47718 10/08/92 57 FR 46325 Hedyotis schlechtendahliana var. remyi E 05/15/97 62 FR 26757 09/03/99 64 FR 48307 Hibiscus brackenridgei E 09/14/93 58 FR 48012 11/10/94 59 FR 56333 Labordia tinifolia var. lanaiensis E 05/15/97 62 FR 26757 09/03/99 64 FR 48307 Melicope munroi E 05/15/97 62 FR 26757 09/03/99 64 FR 48307 Phyllostegia glabra var. lanaiensis E 09/17/90 55 FR 38236 09/20/91 56 FR 47686 Portulaca sclerocarpa E 12/17/92 57 FR 59951 03/04/94 59 FR 10305 Spermolepis hawaiiensis E 09/14/93 58 FR 48012 11/10/94 59 FR 56333 Tetramolopium remyi E 09/17/90 55 FR 38236 09/20/91 56 FR 47686 Vigna o-wahuensis E 09/14/93 58 FR 48012 11/10/94 59 FR 56333 Viola lanaiensis E 09/17/90 55 FR 38236 09/20/91 56 FR 47686 Critical Habitat
Critical habitat is defined in section 3 of the Act as—(i) the specific areas within the geographic area occupied by a species, at the time it is listed in accordance with the Act, on which are found those physical or biological features (I) essential to the conservation of the species and (II) that may require special management considerations or protection; and (ii) specific areas outside the geographic area occupied by a species at the time it is listed, upon a determination that such areas are essential for the conservation of the species. “Conservation” means the use of all methods and procedures that are necessary to bring an endangered or a threatened species to the point at which listing under the Act is no longer necessary.
Critical habitat receives protection under section 7 of the Act through the prohibition against destruction or adverse modification of critical habitat with regard to actions carried out, funded, or authorized by a Federal agency. Section 7 also requires conferences on Federal actions that are likely to result in the destruction or adverse modification of critical habitat
is no longer necessary.
Critical habitat receives protection under section 7 of the Act through the prohibition against destruction or adverse modification of critical habitat with regard to actions carried out, funded, or authorized by a Federal agency. Section 7 also requires conferences on Federal actions that are likely to result in the destruction or adverse modification of critical habitat. In our regulations at 50 CFR 402.02, we define destruction or adverse modification as “* * * the direct or indirect alteration that appreciably diminishes the value of critical habitat for both the survival and recovery of a listed species. Such alterations include, but are not limited to, alterations adversely modifying any of those physical or biological features that were the basis for determining the habitat to be critical.” Aside from the added protection that may be provided under section 7, the Act does not provide other forms of protection to lands designated as critical habitat. Because consultation under section 7 of the Act does not apply to activities on private or other non-Federal lands that do not involve a Federal nexus, critical habitat
In order to be included in a critical habitat designation, the habitat must first be “essential to the conservation of the species.” Critical habitat designations identify, to the extent known using the best scientific and commercial data available, habitat areas that provide essential life cycle needs of the species ( i.e. , areas on which are found the primary constituent elements, as defined at 50 CFR 424.12(b)).
Section 4 requires that we designate critical habitat at the time of listing and based on what we know at the time of the designation. When we designate critical habitat at the time of listing or under short court-ordered deadlines, we will often not have sufficient information to identify all areas of critical habitat
are found the primary constituent elements, as defined at 50 CFR 424.12(b)).
Section 4 requires that we designate critical habitat at the time of listing and based on what we know at the time of the designation. When we designate critical habitat at the time of listing or under short court-ordered deadlines, we will often not have sufficient information to identify all areas of critical habitat. We are required, nevertheless, to make a decision and thus must base our designations on what, at the time of designation, we know to be critical habitat.
Within the geographic area occupied by the species, we will designate only areas currently known to be essential. Essential areas should already have the features and habitat characteristics that are necessary to sustain the species. We will not speculate about what areas might be found to be essential if better information became available, or what areas may become essential over time. If the information available at the time of designation does not show that an area provides essential life cycle needs of the species, then the area should not be included in the critical habitat designation. Within the geographic area occupied by the species, we will not designate areas that do not now have the primary constituent elements , as defined at 50 CFR 424.12(b), that provide essential life cycle needs of the species.
Our regulations state that, “The Secretary shall designate as critical habitat areas outside the geographic area presently occupied by the species only when a designation limited to its present range would be inadequate to ensure the conservation of the species.” (50 CFR 424.12(e)). Accordingly, when the best available scientific and commercial data do not demonstrate that the conservation needs of the species require designation of critical habitat outside of occupied areas, we will not designate critical habitat in areas outside the geographic area occupied by the species
o its present range would be inadequate to ensure the conservation of the species.” (50 CFR 424.12(e)). Accordingly, when the best available scientific and commercial data do not demonstrate that the conservation needs of the species require designation of critical habitat outside of occupied areas, we will not designate critical habitat in areas outside the geographic area occupied by the species.
The Service's Policy on Information Standards Under the Endangered Species Act, published in the Federal Register on July 1, 1994 (Vol. 59, p. 34271), provides criteria, establishes procedures, and provides guidance to ensure that decisions made by the Service represent the best scientific and commercial data available. It requires Service biologists, to the extent consistent with the Act and with the use of the best scientific and commercial data available, to use primary and original sources of information as the basis for recommendations to designate critical habitat. When determining which areas are critical habitat, a primary source of information should be the listing package for the species. Additional information may be obtained from a recovery plan, articles in peer-reviewed journals, conservation plans developed by states and counties, scientific status surveys and studies, and biological assessments or other unpublished materials ( i.e. gray literature).
Habitat is often dynamic, and species may move from one area to another over time. Furthermore, we recognize that designation of critical habitat may not include all of the habitat areas that may eventually be determined to be necessary for the recovery of the species. For these reasons, all should understand that critical habitat designations do not signal that habitat outside the designation is unimportant or may not be required for recovery
from one area to another over time. Furthermore, we recognize that designation of critical habitat may not include all of the habitat areas that may eventually be determined to be necessary for the recovery of the species. For these reasons, all should understand that critical habitat designations do not signal that habitat outside the designation is unimportant or may not be required for recovery. Areas outside the critical habitat designation will continue to be subject to conservation actions that may be implemented under Section 7(a)(1) and to the regulatory protections afforded by the section 7(a)(2) jeopardy standard and the Section 9 take prohibition, as determined on the basis of the best available information at the time of the action. We specifically anticipate that federally funded or assisted projects affecting listed species outside their designated critical habitat areas may still result in jeopardy findings in some cases. Similarly, critical habitat designations made on the basis of the best available information at the time of designation will not control the direction and substance of future recovery plans, habitat conservation plans, or other species conservation planning efforts if new information available to these planning efforts calls for a different outcome.
Prudency Redeterminations
As previously stated, designation of critical habitat is not prudent when one or both of the following situations exist: (i) The species is threatened by taking or other human activity, and identification of critical habitat can be expected to increase the degree of such threat to the species; or (ii) such designation of critical habitat would not be beneficial to the species (50 CFR 424.12(a)(1)).
To determine whether critical habitat would be prudent for each of the eight species at issue, we analyzed the potential threats and benefits for each species in accordance with the court's order. One species, Phyllostegia glabra var. lanaiensis, known only from Lanai, is no longer extant in the wild
ch designation of critical habitat would not be beneficial to the species (50 CFR 424.12(a)(1)).
To determine whether critical habitat would be prudent for each of the eight species at issue, we analyzed the potential threats and benefits for each species in accordance with the court's order. One species, Phyllostegia glabra var. lanaiensis, known only from Lanai, is no longer extant in the wild. Phyllostegia glabra var. lanaiensis was last collected on “northern Lanai” on June, 6, 1914 (HINHP Database 2000). In addition, this species is not known to be in storage or under propagation. Therefore, we believe it may be extinct. Under these circumstances, we propose that designation of critical habitat for Phyllostegia glabra var. lanaiensis is not prudent because such designation would be of no benefit to this species. If this species is rediscovered, we may revise this proposal to incorporate or address new information as new data becomes available. See 16 U.S.C. 1532(5)(B); 50 CFR 424.12(f)).
Due to low numbers of individuals and/or populations and their inherent immobility, the other seven plants may be vulnerable to unrestricted collection, vandalism, or disturbance. However, we examined the evidence available for each of these taxa and have not, at this time, found specific evidence of taking, vandalism, collection or trade of these taxa or of similarly situated species. Consequently, while we remain concerned that these activities could potentially threaten these seven plant species in the future, consistent with applicable regulations (50 CFR 424.12(a)(1)(I)) and the court's discussion of these regulations, we do not find that any of these species are currently threatened by taking or other human activity, which threats would be exacerbated by the designation of critical habitat.
In the absence of finding that critical habitat would increase threats to a species, if there are any benefits to critical habitat designation, then a prudent finding is warranted
e court's discussion of these regulations, we do not find that any of these species are currently threatened by taking or other human activity, which threats would be exacerbated by the designation of critical habitat.
In the absence of finding that critical habitat would increase threats to a species, if there are any benefits to critical habitat designation, then a prudent finding is warranted. The potential benefits include: (1) Triggering section 7 consultation in new areas where it would not otherwise occur because, for example, it is or has become unoccupied or the occupancy is in question; (2) focusing conservation activities on the most essential areas; (3) providing educational benefits to State or county governments or private entities; and, (4) preventing people from causing inadvertent harm to the species.
In the case of these seven species, there would be some benefits to critical habitat. The primary regulatory effect of critical habitat is the section 7
Therefore, we propose that critical habitat is prudent for seven species ( Abutilon eremitopetalum, Cyanea macrostegia ssp. gibsonii, Gahnia lanaiensis, Hedyotis mannii, Portulaca sclerocarpa, Tetramolopium remyi, and Viola lanaiensis ) because the potential benefits of designating critical habitat essential for the conservation of these species outweigh the risks, resulting from human activity, of designation. We propose that designation of critical habitat is not prudent for one species, Phyllostegia glabra var. lanaiensis, since we believe it may be extinct, and because such a designation would not be beneficial to this species
ecause the potential benefits of designating critical habitat essential for the conservation of these species outweigh the risks, resulting from human activity, of designation. We propose that designation of critical habitat is not prudent for one species, Phyllostegia glabra var. lanaiensis, since we believe it may be extinct, and because such a designation would not be beneficial to this species.
Primary Constituent Elements
In accordance with section 4(b)(2) of the Act and regulations at 50 CFR 424.12, in determining which areas to propose as critical habitat, we are required to base critical habitat determinations on the best scientific and commercial data available and to consider those physical and biological features that are essential to the conservation of the species and that may require special management considerations or protection. Such requirements include, but are not limited to, space for individual and population growth, and for normal behavior; food, water, air, light, minerals, or other nutritional or physiological requirements; cover or shelter; sites for breeding, reproduction, or rearing of offspring, germination, or seed dispersal; and, habitats that are protected from disturbance or are representative of the historic geographical and ecological distributions of a species.
As stated above in the discussion about each of the 19 species, very little is known about the specific physical and biological requirements of these species. As such, we are proposing to define the primary constituent elements on the basis of general habitat features of the areas in which the plant species are currently found, such as the type of plant community and their physical location ( e.g., steep rocky cliffs, talus slopes, stream banks) and elevation
very little is known about the specific physical and biological requirements of these species. As such, we are proposing to define the primary constituent elements on the basis of general habitat features of the areas in which the plant species are currently found, such as the type of plant community and their physical location ( e.g., steep rocky cliffs, talus slopes, stream banks) and elevation. Therefore, the descriptions of the physical elements of the locations of each of these species and the plant community associated with the species, as described in the SUPPLEMENTARY INFORMATION: Discussion of the Plant Taxa section above, constitute the primary constituent elements for these species.
The currently known primary constituent elements of critical habitat for Vigna o-wahuensis on Lanai are unknown because we are not able, at this time, to ascertain the specific location of Vigna o-wahuensis on Lanai. This species was last collected 14 years ago from the “windward slopes of Kanepuu” (HINHP Database 2000; J. Lau, in litt. 2000). We are not, therefore, designating critical habitat for Vigna o-wahuensis, on Lanai. However, critical habitat has been proposed for this species on Maui and Kahoolawe, and may be considered on the island of Hawaii. Future field surveys of this relatively large area encompassed by the “windward slopes of Kanepuu” may lead to a rediscovery of the location of this species and may enable us to determine the habitat components essential for the conservation of Vigna o-wahuensis on Lanai.
Methods for Selection of Areas for Proposed Critical Habitat Designations
We have defined primary constituent elements based on the general habitat features of the areas in which they currently occur such as the type of plant community in which the plants occur, their physical location ( e.g., steep rocky cliffs, talus slopes, stream banks), and elevation
rvation of Vigna o-wahuensis on Lanai.
Methods for Selection of Areas for Proposed Critical Habitat Designations
We have defined primary constituent elements based on the general habitat features of the areas in which they currently occur such as the type of plant community in which the plants occur, their physical location ( e.g., steep rocky cliffs, talus slopes, stream banks), and elevation. The areas we propose to designate as critical habitat provide some or all of the habitat components essential for the conservation of 18 of the 19 plant species.
Critical habitat may also include areas outside the geographic area presently occupied by a species upon a determination that such areas are essential to the conservation of the species (16 U.S.C. 1532 (5)(A)(ii)). This may include, for example, potentially suitable unoccupied habitat that is important to the recovery of the species. We have not included such areas in the proposed designations for these 18 species because of our limited knowledge of the historical range (the geographical area outside the area presently occupied by the species), and our lack of more detailed information on the specific physical or biological features essential for the conservation of the species that would be needed, for instance, to determine where to reintroduce a species.
Historical (pre-1970), or even post-1970, records for a species may be based on herbarium specimens that contain only the most rudimentary collection information, such as only the name of the island from which the specimen was collected or a general place name ( e.g., north Lanai and Lanaihale). In the main Hawaiian Islands, climatic and ecological conditions such as rainfall, elevation, slope, aspect, etc., may vary dramatically within a relatively short distance. Therefore, a simple place name does not provide adequate information on the physical and biological features that may have occurred there or may occur there now
lected or a general place name ( e.g., north Lanai and Lanaihale). In the main Hawaiian Islands, climatic and ecological conditions such as rainfall, elevation, slope, aspect, etc., may vary dramatically within a relatively short distance. Therefore, a simple place name does not provide adequate information on the physical and biological features that may have occurred there or may occur there now.
The unpredictable distribution of Hawaiian plant species also makes it difficult to designate potentially suitable unoccupied habitat. For example, currently a species may be known from northern and southern (or eastern and western) locations on an island but not from intervening locations in similar habitat. Based on the best available information, we are unable to determine whether a species once occurred in the intervening areas and disappeared from there prior to Polynesian or European times (thus never having been collected or documented there), or simply never occurred there.
We consider reintroduction (the planting of propagated individuals or seedlings into an area) to be an acceptable method to try to achieve plant species recovery. However, native plant reintroductions are difficult, and successful efforts are not common. We do not know enough about these 18 species to identify areas where reintroductions are likely to be successful. We will continue to support experimental efforts to reintroduce species that may eventually provide us with additional information on the physical and biological features essential to the conservation of these species, and thus, may eventually result in identification of unoccupied habitat for future designation.
As required by the Act and regulations (section 4(b)(2) and 50 CFR 424.12), we used the best scientific in litt. 1999; HINHP Database 2000, HPPRCC 1998; Service 1995, 1996a, 1996b, 1997, 1998, 1999)
nal information on the physical and biological features essential to the conservation of these species, and thus, may eventually result in identification of unoccupied habitat for future designation.
As required by the Act and regulations (section 4(b)(2) and 50 CFR 424.12), we used the best scientific in litt. 1999; HINHP Database 2000, HPPRCC 1998; Service 1995, 1996a, 1996b, 1997, 1998, 1999).
In 1994, the HPPRCC initiated an effort to identify and map habitat it believed to be important for the recovery of 282 endangered and threatened Hawaiian plant species. The HPPRCC identified these areas on most of the islands in the Hawaiian chain, and in 1999, we published them in our Recovery Plan for the Multi-Island Plants (Service 1999). Because the HPPRCC identified essential habitat areas for all listed, proposed, and candidate plant species and evaluated species of concern to determine if essential habitat areas would provide for their habitat needs as well, the HPPRCC's mapping of habitat is distinct from the regulatory designation of critical habitat, as defined by the Act. While these habitat maps are a planning tool to focus conservation efforts on the areas that may be most important to the conservation of Hawaii's listed plant species, as well as other plant species of concern, it does not substitute for the more exacting regulatory process of designating critical habitat. Therefore, the critical habitat designations proposed in this rule do not include all of the habitat identified by the HPPRCC. In addition, the HPPRCC expects there will be subsequent efforts to further refine the locations of important habitat areas and that new survey information or research findings may also lead to additional refinements (HPPRCC 1998).
For these 18 plant species from Lanai, currently occupied habitat was examined and critical habitat boundaries were delineated in such a way that locations with a high density of endangered plants could be depicted clearly (multi-species units)
fine the locations of important habitat areas and that new survey information or research findings may also lead to additional refinements (HPPRCC 1998).
For these 18 plant species from Lanai, currently occupied habitat was examined and critical habitat boundaries were delineated in such a way that locations with a high density of endangered plants could be depicted clearly (multi-species units). However, these multi-species critical habitat units are not homogenous or uniform in nature, and critical habitat units often encompass a number of plant community types.
To examine plant occurrences, every current (post-1970) location of every species was delineated within a 536 m (1,760 ft) radius circle with an additional 50 m (164 ft) added to the radius of each location, in order to insure enough area to provide for the proper ecological functioning of the habitat immediately supporting the plant, for a total of 586 m (1,924 ft) radius. This radius is consistent with the accuracy of the mapped locations of the plant(s), and is based on the standard mapping methodology for rare species used by the HINHP (1996). The additional 50 m (164 ft) is consistent with the guidelines identified in the recovery plans for these species for minimum-sized enclosures for rare plants (Service 1995, 1996a, 1996b, 1997, 1998, 1999). In cases where there were isolated species locations, a circular area with a radius of roughly 586 m (1,924 ft) is proposed as critical habitat (HINHP 1996; Service 1995, 1996a, 1996b, 1997, 1998, 1999).
The manner in which we delineated each multi-species proposed critical habitat unit are as follows:
(1) Known current locations of each species were delineated using the guidelines explained above (Figure 1(a)).
(2) The perimeter boundaries of individual circular areas were connected to form unit area boundaries (Figure 1(b)).
itat (HINHP 1996; Service 1995, 1996a, 1996b, 1997, 1998, 1999).
The manner in which we delineated each multi-species proposed critical habitat unit are as follows:
(1) Known current locations of each species were delineated using the guidelines explained above (Figure 1(a)).
(2) The perimeter boundaries of individual circular areas were connected to form unit area boundaries (Figure 1(b)).
(3) Unit area boundaries were delineated to follow significant topographic features (50 CFR 424.12(c)) such as coastlines, ridgelines, and valleys (Figure 1(c)).
These delineation methods were used to facilitate identification of boundary lines and to aid in implementation of on-the-ground conservation measures. In delineating critical habitat units we made an effort to avoid developed areas such as towns, agricultural lands, and other lands unlikely to contribute to the conservation of these 18 species. Within the critical habitat boundaries, adverse modification would only generally occur if the primary constituent elements are affected. Therefore, not all activities within critical habitat would trigger an adverse modification conclusion. Existing features and structures within proposed areas, such as buildings, roads, aqueducts, telecommunications equipment, arboreta and gardens, heiaus (pre-Christian place of worship, shrine), and other man-made features, do not contain, and are not likely to develop, constituent elements. Therefore, unless a Federal action related to such features or structures indirectly affected nearby habitat containing the primary constituent elements, operation and maintenance of such features or structures would not be impacted by the designation of critical habitat
ian place of worship, shrine), and other man-made features, do not contain, and are not likely to develop, constituent elements. Therefore, unless a Federal action related to such features or structures indirectly affected nearby habitat containing the primary constituent elements, operation and maintenance of such features or structures would not be impacted by the designation of critical habitat.
EP27DE00.025
EP27DE00.026
EP27DE00.027
All currently occupied sites containing one or more of the primary constituent elements considered essential to the conservation of these 18 plant species were examined to determine if additional special management considerations or protection are required above those currently provided. We reviewed all available management information on these plants at these sites including published reports and surveys; annual performance reports; forestry management plans; grants; memoranda of understanding and cooperative agreements; State of Hawaii, Division of Forestry and Wildlife (DOFAW) planning documents; internal letters and memos; biological assessments and environmental impact statements; and, section 7 consultations. Additionally, we contacted the major private landowner on Lanai by mail and we met with the landowner's representatives in April 2000 to discuss their current management for the plants on their lands. We also met with Maui County DOFAW office staff to discuss management activities they are conducting on Lanai.
Pursuant to the definition of critical habitat in section 3 of the Act, any area so designated must also require “special managment considerations or protections.” Adequate special management or protection is provided by a legally operative plan that addresses the maintenance and improvement of the essential elements and provides for the long-term conservation of the species
conducting on Lanai.
Pursuant to the definition of critical habitat in section 3 of the Act, any area so designated must also require “special managment considerations or protections.” Adequate special management or protection is provided by a legally operative plan that addresses the maintenance and improvement of the essential elements and provides for the long-term conservation of the species. The Service considers a plan adequate when it meets all of the following three criteria: (1) The plan provides a conservation benefit to the species ( i.e., the plan must maintain or provide for an increase in the species' population or the enhancement or restoration of its habitat within the area covered by the plan; (2) the plan provides assurances that the management plan will be implemented ( i.e., those responsible for implementing the plan are capable of accomplishing the objectives, have an implementation schedule and/or have adequate funding to implement the management plan); and, (3) the plan provides assurances the conservation plan will be effective ( i.e., it identifies biological goals, has provisions for reporting progress, and is of a duration sufficient to implement the plan and achieve the plan's goals and objectives). If an area is covered by a plan that meets these criteria, it does not constitute critical habitat as defined by the Act.
In determining and weighing the relative significance of the threats that would need to be addressed in management plans or agreements, we considered the following:
progress, and is of a duration sufficient to implement the plan and achieve the plan's goals and objectives). If an area is covered by a plan that meets these criteria, it does not constitute critical habitat as defined by the Act.
In determining and weighing the relative significance of the threats that would need to be addressed in management plans or agreements, we considered the following:
(1) The factors that led to the listing of the species, as described in the final rules for listing each of the species. For all or nearly all endangered and threatened plants in Hawaii, the major threats include adverse impacts due to non-native plant and animal species. Direct browsing, digging, and trampling by ungulates, including pigs, goats, cattle, sheep, and deer, and direct competition from non-native plants have led to the decline of Hawaii's native flora (Cuddihy and Stone 1990; Loope 1998; Scott et al. 1986; Smith 1985; Stone 1985; Service 1995, 1996a, 1996b, 1997, 1998, 1999; Vitousek 1992; Wagner et al . 1985). Ungulate activity in most areas results in an increase of non-native plants because most of these non-native plants are able to colonize newly disturbed areas more quickly and effectively than Hawaii's native plants (Cuddihy and Stone 1990; Mack 1992; Scott et al. 1986; Smith 1985; Tunison et al. 1992; Service 1995, 1996a, 1996b, 1997, 1998, 1999).
(2) The recommendations from the HPPRCC in their 1998 report (“Habitat Essential to the Recovery of Hawaiian Plants”). As summarized in this report, recovery goals for endangered Hawaiian plant species cannot be achieved with ungulates ( e.g., pigs, goats, deer, and sheep) present in Essential Habitat Areas.
. 1986; Smith 1985; Tunison et al. 1992; Service 1995, 1996a, 1996b, 1997, 1998, 1999).
(2) The recommendations from the HPPRCC in their 1998 report (“Habitat Essential to the Recovery of Hawaiian Plants”). As summarized in this report, recovery goals for endangered Hawaiian plant species cannot be achieved with ungulates ( e.g., pigs, goats, deer, and sheep) present in Essential Habitat Areas.
(3) The management actions needed for assurance of survival and ultimate recovery of Hawaii's endangered plants. These actions are described in our recovery plans for 15 of the 18 species (Service 1995, 1996a, 1996b, 1997, 1998, 1999), in the HPPRCC (1998) report, and in various other documents and publications relating to plant conservation in Hawaii (Cuddihy and Stone 1990; Mueller-Dombois 1985; Smith 1985; Stone 1985; Stone et al . 1992). These actions include, but are not limited to, the following: (1) Feral ungulate control; (2) non-native plant control; (3) rodent control; (4) invertebrate pest control; (5) fire control; (6) maintenance of genetic material of the endangered and threatened plant species; (7) propagation, reintroduction, and/or augmentation of existing populations into areas deemed essential for the recovery of these species; (8) on-going management of the wild, outplanted, and augmented populations; (9) habitat management and restoration in areas deemed essential for the recovery of these species; and (10) monitoring of the wild, outplanted, and augmented populations.
In general, taking all of the above recommended management actions into
As shown in Table 3, these 18 species of plants occur on private land on the island of Lanai. Information received in response to our two public notices, and meetings with representatives of the landowner and Maui County DOFAW staff, indicated that there is little on-going conservation management for these plants, except as noted below
taking all of the above recommended management actions into
As shown in Table 3, these 18 species of plants occur on private land on the island of Lanai. Information received in response to our two public notices, and meetings with representatives of the landowner and Maui County DOFAW staff, indicated that there is little on-going conservation management for these plants, except as noted below. Without management plans and assurances that the plans will be implemented, we are unable to find that the land in question does not require special management or protection.
One species ( Bonamia menziesii ) is reported from The Nature Conservancy of Hawaii's Kanepuu Preserve which is located in the northeast central portion of Lanai (GDSI 2000; HINHP Database 2000; The Nature Conservancy of Hawaii (TNCH) 1997). This preserve was established by

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