Asplenium unisorum
Species of fern
From Wikipedia, the free encyclopedia
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 (2,130 and 2,300 ft) in the Waiʻanae Range on the island of Oʻahu.[1] It is classified as critically endangered, with a fragmented, actively shrinking mature population of around 1,150.[1]
| Asplenium unisorum | |
|---|---|
| |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Division: | Polypodiophyta |
| Class: | Polypodiopsida |
| Order: | Polypodiales |
| Suborder: | Aspleniineae |
| Family: | Aspleniaceae |
| Genus: | Asplenium |
| Species: | A. unisorum |
| Binomial name | |
| Asplenium unisorum | |
| Synonyms[4] | |
|
Diellia unisora Wagner | |
Description
It grows 5–30 mm (0.2–1.2 in) tall, with a 5–10 mm (0.2–0.4 in) 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 2–5 cm (0.8–2.0 in) long.[6] Branching off from the stalks, the fronds of the fern are 8–30 cm (3.1–11.8 in) tall by 0.5–3 cm (0.2–1.2 in) broad.[6]
