形態特徵

• Rhizome erect, stout, covered with persistent stipe bases; scales narrowly lanceolate, attenuate, brown to pale brown.
• Stipes stramineous, 8-25 cm long, scaly at base; lamina deltoid, 18-35 cm long by 14-25 cm wide, bipinnate; pinnae 7-15 cm long, ascending, subsessile or with very short petioles; pinnules usually sessile, or adnate on small fronds, serrulate or denticulate; upper surface with spines along margins of rachilla and costa grooves; basal pinna usually shortened and broader than those above it, basal pinnules of lowest pinna much shortened.
• Sori oblong, medial, 1-2 mm long; indusia straight or curved and crossing a veinlet.

分布

• 世界 : China, Korea, Japan.

引證標本

HSINCHU: Kuaishan, Do s. n. 1934. NANTOU: Wanghsiang, Tsai 10383; Chitou, Shieh & Tsai 2051. CHIAYI: Mt. Alishan, Shieh & Tsai 6751.

參考文獻

• SHIEH, WANG-CHUENG, DEVOL, CHARLES E. and KUO, CHEN-MENG, Flora of Taiwan, second edition 1: 427. 1994.  (Fl. Taiwan 2nd edit.)