条纹凤尾蕨(原变种) tiao wen feng wei jue (yuan bian zhong)

Pteris dimorpha Copeland; P. grevilleana Wallich var. diffusa Y. C. Wu, K. K. Wong & Pong.

Fertile fronds: lamina 1-pinnate or sometimes subdigitate, basally decrescent to costae bearing narrow wings; pinnae linear, 8-12 × 0.6-1 cm, margins entire or slightly undulate, rarely with a few lobes, apex acuminate; lateral pinnae 1 or 2 pairs, opposite, spreading, sessile, same as terminal pinna in shape but shorter, basally basiscopic side decurrent, basal pair often 2-forked.

Forests, near creeks, among wet rocks; 200-500 m. Fujian (Minhou, Nanjing), Guangdong, Guangxi, NE and SE Guizhou, Taiwan [Japan (Ryukyu Islands), N Vietnam].