Polyscias flynnii (known by the common names Flynn's ʻOhe and ʻOheʻohe) is a plant species endemic to the island of Kauai in Hawaii. It is rare, found only in one population covering about 1 km2 in the Kalalau Valley. It is regarded as threatened.Lowry, P.P., & G.M. Plunkett. 2010. Plant Diversity and Evolution 128: 74. It is threatened by feral goats and non-native plant species in its habitat. It was federally listed as an endangered species of the United States in 2010.Tetraplasandra flynnii. The Nature Conservancy.

This plant was first discovered in 1988 and described to science as a new species in 2000.Lowry, P. P. and K. R. Wood. (2000). A new, threatened species of Tetraplasandra (Araliaceae) from Kauai, Hawaiian Islands, and notes on its conservation status. Novon 10(1) 40-44. There are only five individuals known to exist.USFWS. Determination of Endangered Status for 48 Species on Kauai and Designation of Critical Habitat; Final Rule. Federal Register April 13, 2010.

Polyscias flynnii is a tree up to 9 m tall. Leaves are pinnately compound, up to 60 cm long, with reddish-brown hairs on the underside but not on the upper side. Inflorescence is a panicle or umbel hanging from the axils of the leaves, with 10-15 flowers. Flowers are yellow-green, some hermaphroditic (both male and female) but others on the same plant staminate (male only).photo of isotype at Missouri Botanical Garden

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