形態特徵

• Sterile fronds bipinnatifid; stipe 10-30 cm long, c. s. round, with 2 curved bundles; scales at base thin, brown, entire, lanceolate; lamina longer than wide; venation free, simple.
• Fertile fronds dark brown, persistent, pinnate; stipe 15-25 cm long; pinnae linear, usually 5-6 cm long.
• Sporangia in a coenosori, covered with thin, linear, inner indusium and coriaceous inrolled brown leaf margins.

分布

• 世界 : Korea, Japan, China and Himalayas.

引證標本

ILAN: Taipingshan, Sasaki s. n. 1932*; Cross Island Highway, Ssuyuan, Hsu 853, Kuo 4040.

參考文獻

• DEVOL, CHARLES E. and SHIEH, WANG-CHUENG, Flora of Taiwan, second edition 1: 264. 1994.  (Fl. Taiwan 2nd edit.)