Isodendrion longifolium

Isodendrion longifolium is a rare species of flowering plant in the violet family known by the common names longleaf isodendrion and aupaka. It is endemic to Hawaii, where it is known from fewer than 1000 individuals on the islands of Kauai and Oahu.[1] It is a federally listed threatened species of the United States.

Isodendrion longifolium

Imperiled  (NatureServe)
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malpighiales
Family: Violaceae
Genus: Isodendrion
Species:
I. longifolium
Binomial name
Isodendrion longifolium

This is a shrub growing 0.6 to 2 meters tall. It has lance-shaped, leathery leaves up to 30 centimeters long and produces fragrant purple flowers.[2]

This shrub grows in moist and wet forest habitat.[1] There are fewer than 50 individuals remaining on Oahu, and the plant is slightly more abundant on Kauai.[1]

The plants' habitat is threatened by feral ungulates including wild boars. Another threat is competition with non-native plant species.[1]

References
  1. Isodendrion longifolium. The Nature Conservancy.
  2. USFWS. Determination of endangered or threatened status for fourteen plant taxa from the Hawaiian Islands. Federal Register October 10, 1996.


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