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Asplenium unisorum
Species of fern From Wikipedia, the free encyclopedia
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Asplenium unisorum, the singlesorus island spleenwort,[5] is a species of fern endemic to the Hawaiian Islands.[1] It only lives between 650 and 700 m in the Wai'anae Mountains on the island of O'ahu.[1] It is classified as critically endangered, with a fragmented, actively shrinking mature population of around 1,148.[1]
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Description
It grows 0.5-3.0cm tall, with a 0.5-1.0cm diameter.[6] Leaf stalks branch off the main stem, which also features a few "small black scales".[6] The stalks themselves are "black and shiny", around 2.0-5.0cm long.[6] Branching off from the stalks, the fronds of the fern are 8.0-30.0cm tall by 0.5-3.0cm broad.[6]
References
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