Pritchardia aylmer-robinsonii
Overview
Pritchardia aylmer-robinsonii is a species of palm tree that is endemic to the island of Niʻihau, Hawaii, United States. It inhabits coastal dry forests at an elevation of 70–270 m (230–890 ft). P.
aylmer-robinsonii reaches a height of 7–15 m (23–49 ft) and a trunk diameter of 20–30 cm (7.9–11.8 in). Harold St. John discovered this species in 1949, and the specific epithet refers to Aylmer Francis Robinson, a member of the family that owned the island.
P. aylmer-robinsonii has been reintroduced to the Makauwahi Cave Reserve on Kauaʻi, where the species is believed to have previously ranged.
Pritchardia aylmer-robinsonii faces severe population decline due to habitat destruction from agricultural conversion and urban development on its native Hawaiian islands. Invasive plant species compete aggressively for resources, while introduced ungulates like feral pigs damage root systems and trample seedlings. The species' extremely limited range makes it particularly vulnerable to stochastic events and genetic bottlenecks.
Habitat
This endemic Hawaiian palm inhabits dry to mesic forests and coastal areas on specific Hawaiian islands, typically growing in well-drained soils at elevations from sea level to moderate mountain slopes. The species requires specific microclimate conditions found in native Hawaiian forest ecosystems.
Other threatened species in ARECACEAE
Frequently asked questions
Why is Pritchardia aylmer-robinsonii classified as Critically Endangered?
Where does Pritchardia aylmer-robinsonii live?
What are the main threats to Pritchardia aylmer-robinsonii?
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