Endemic to the central Waianae Mountains of Oahu. This variety has been recorded from a handful of sites over a distance of 7 km. Currently, there are fewer than 200 plants known. Most of the plants are in an area where feral goats are degrading the native communities and damaging the plants themselves. Fire has swept through portions of this taxon's range in recent years. Feral pigs and alien plants are also serious threats to the taxon.
Threats to L. lobata var. leptophylla include invasive introduced plants such as Schinus terebinthifolius (Christmas berry), Leucaena leucocephala (koa haole), and Melinus minutiflora (molasses grass), feral goats, and fire.
Number of Populations: 3 (USFWS 2001)
Number of Plants: >140 (USFWS 2001)
The National Tropical Botanical Garden (NTBG) and Lyon Arboretum are propagating Lipochaeta lobata var. leptophylla (USFWS 1998).
NTBG currently has ex situ holdings of 15 seeds in its seed bank, which represents one out of the three populations.
1. Construct enclosures to protect against feral goats. Also, removal of goats from populated areas of L. lobata var. leptophylla would reduce their impacts on the native ecosystems.
2. Control competing alien plant species within exclosures.
3. Provide protection from fire by coordinating a fire protection plan.
4. Conduct pollination biology, seed dispersal studies on L. lobata var. leptophylla.
5. Map genetic diversity in the surviving populations of L. lobata var. leptophylla.
Recommendation derived from M.H. Chapin, M. Maunder, and USFWS (1998).
1. Establish secure ex situ stocks with full founder representation.
2. Develop proper horticultural protocols and pest management for L. lobata var. leptophylla.
Recommendations derived from M.H. Chapin and M. Maunder.
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