Japanese name: コミダケシダ（古見岳羊歯） Scientific name:Ctenitis iriomotensis
An evergreen fern growing in colonies on rocks along mountain streams in evergreen broadleaf forests in the mountains.
It has a short, massive rhizome that grows obliquely upward.
The stalk is 10 cm or less long, with linear brown scales at the base.
The fronds are oblong-ovate, 15 cm or less long and 5 cm or less wide, and are three times deeply pinnately lobed.
The lowest pinna is the largest, 2.5 cm long and 1.2 cm wide, shallowly cut, with a pair of pinnules fused at the base; the other pinnae are shallowly to deeply lobed.
The sori are borne midway on the lobes or toward the pinnule axis, and the indusium is round-reniform and entire.
