CPC National Collection Plant Profile

Hesperomannia arbuscula

Photographer:
Elizabeth Huppman

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CPC National Collection Plant Profile

Hesperomannia arbuscula


Family: 
Asteraceae  
Common Name: 
Maui hesperomannia
Author: 
Hillebr.
Growth Habit: 
Tree, Shrub
CPC Number: 
2229

Distribution
Protection
Conservation
References


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Hesperomannia arbusculaenlarge
Photographer: Elizabeth Huppman
Image Owner: Harold L. Lyon Arboretum


Hesperomannia arbuscula is Fully Sponsored
Primary custodian for this plant in the CPC National Collection of Endangered Plants is: 
Nellie Sugii contributed to this Plant Profile.

 
Hesperomannia arbuscula


Hesperomannia arbuscula is a member of a rare and endemic genus found in the dry forest areas of the south and central Wai`anae Mountains on O`ahu and Iao Valley on Mau`i. On O`ahu, the 3 remaining populations is known to occur within an area of only about 10 square miles. It is a small, shrubby tree which grows to about 6-10 feet in height and bears beautiful clusters of erect thistle-like heads, each made up of many yellow to yellow-brown florets. Its closest relatives are from the New World, probably in South America. The genus Hesperomannia is thought to be one of the early immigrants to the Hawaiian Islands.

Distribution & Occurrence

State Range
  Hawaii
State Range of  Hesperomannia arbuscula
Habitat
  Typically grows on slopes and ridges in mesic to wet forests at an elevation of 350 to 900 meters. (Wagner et. al 1999) and (USFWS 1998).

Distribution
  Makaha-Wai`anae Kai Ridge, O`ahu
Kalua`a Gulch, O`ahu
Kapuna Gulch, O`ahu
Iao Valley, West Mau`i
(USFWS 1998)

Number Left
  2 sites (O`ahu and M`aui)
4 populations
53-55 individuals
(USFWS 2001)

Protection

Global Rank:  
G1
 
8/7/1990
Guide to Global Ranks
Federal Status:  
LE
 
10/29/1991
Guide to Federal Status
Recovery Plan:  
Yes
 
8/10/1998

State/Area Protection
  State/Area Rank Status Date  
  Hawaii S1 E 4/11/2002  

Conservation, Ecology & Research

Ecological Relationships
  Hesperomannia arbuscula usually flowers in the spring depending upon precipitation. The trees last about 10-15 years. (USFWS 1998)

Threats
  Ungulates (pigs)
Rats
Alien plants
Humans (trampling)
Overcollection
Reduced reproductive vigor due to small population size
(USFWS 1998, 2001)

Current Research Summary
  Micropropagation (Harold L. Lyon Arboretum)
Propagation (Harold L. Lyon Arboretum, National Tropical Botanical Garden)
(USFWS 1998) and (Nellie Sugii Pers. Comm. 2001)

Current Management Summary
  Alien plant removal has been conducted by the Dept. of Land and Natural Resources-NAR (USFWS 1998)
In April, 2002, the U.S. Fish and Wildlife Service determined that a designation of critical habitat was prudent for this species. (USFWS 2002)

Research Management Needs
  Enclosures
Outplanting
Feral and domestic animal control
Rat control
Monitoring
Weed control
(USFWS 1998)

Ex Situ Needs
  Optimize propagation protocols
Germplasm storage
Seed banking
Genetic study
Biology and physiology study
(USFWS 1998)

References

Books (Single Authors)

Wagner, W.L.; Bruegmann, M.M.; Herbst, D.R; Lau, J.Q.C. 1999. Hawaiian Vascular Plants at Risk: 1999. Honolulu, HI: Bishop Museum Press Honolulu.

Wagner, W.L.; Herbst, D.R.; Sohmer, S.H. 1999. Manual of the flowering plants of Hawai'i--Revised Edition. Honolulu, HI: University of Hawaii Press and Bishop Museum Press. 1853p.

Books (Sections)

Kartesz, J.T. 1999. A synonymized checklist of the vascular flora of the U.S., Canada, and Greenland. In: Kartesz, J.T.; Meacham, C.A., editors. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden. Chapel Hill, NC.

Electronic Sources

(2002). Hawaiian Native Plant Genera. Gerald D. Carr, University of Hawaii Botany Department. http://www.botany.hawaii.edu/faculty/carr/natives.htm. Accessed: 2002.

Journal Articles

1999. Joint Effort to Save Rare Plant. The Kukui Leaf. XXVI, 3,4: 5, 8.

USFWS. 1976. Proposed Endangered Status for 1700 U.S. Plants. Federal Register. 41: 24523-24572.

USFWS. 1990. 46 Plants and Animals. Endangered Species Technical Bulletin. 15, 10: 4-10.

USFWS. 1990. Proposed Endangered Status for 26 Plants from the Waianae Mountains, Island of Oahu, HI. Federal Register. 55, 189: 39664-39680.

USFWS. 1991. Determination of Endangered Status for 26 Plants From the Waianae Mountains, Island of Oahu, Hawaii. Federal Register. 56: 55770-55786.

USFWS. 2000. Determinations of Prudency and Designations of Critical Habitat for Plant Species From the Islands of Maui and Kahoolawe, Hawaii. Federal Register. 65, 243: 143.

USFWS. 2002. Designations of Critical Habitat for Plant Species From the Island of Oahu, Hawaii. Federal Register. 67, 102: 37108-37156.

USFWS. 2002. Revised Determinations of Prudency and Proposed Designations of Critical Habitat for Plant Species From the Islands of Maui and Kahoolawe. Federal Register. 67, 64: 15856-15987.

Reports

MISC. 2001. Maui Invasive Species Committee (MISC), Pulling Together Initiative. 2002 Project Proposal. Submitted to the National Fish and Wildlife Foundation. p.14.

TNC. 2000. Honouliuli Preserve Master Plan. The Nature Conservancy. Web site;.

USFWS. 1998. Recovery Plan for Oahu Plants. Portland, Oregon: U.S. Fish & Wildlife Service. p.207 , plus appendices. Final Recovery Plan.

USFWS. 2001. U.S. Fish and Wildlife Service Species List. March 30, 2000. Honolulu: Unpublished. U.S. Fish and Wildlife Service. p.19.


  This profile was updated on 3/4/2010
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