Oriental ladyfern

Description

Athyrium niponicum, commonly known as Oriental ladyfern and Japanese painted fern is a species of fern native to eastern Asia. This species was redefined as a member of genus Anisocampium in 2011 based on phylogenetic analyses.This deciduous fern has a creeping rhizome and a tuft-shape array of fronds. The fronds are variable in length, generally 30 to 75 centimeters long but occasionally over a meter in length. They have alternately arranged, subdivided pinnae. The spore-bearing sori on the undersides of the fertile pinnae are variable in shape, being "oblong, hooked, J-shaped, or horseshoe-shaped"