形態特徵

• Rhizome creeping to suberect.
• Stipes approximate, grayish-green streaked with purple, 8-20 cm long, sparingly scaly; scales lanceolate, subentire or with a few long marginal hairs near base; fronds lanceolate or narrowly lanceolate, basal pinnae longest, apex pinnatifid; lamina pinnate to bipinnate, 15-30 cm long by 5 cm wide in pinnate fronds; 35 cm long by 12 cm wide in bipinnate fronds; pinnae petiolate, unequal at base, with one or more obtuse, acroscopic cuneate lobes, cut more than 1/2 way to costa; margins crenately toothed, basiscopic side of pinnules crenately toothed in small plants, obtusely lobed in larger ones; a single bud often borne at the base of one or more the upper pinnae.
• Sori 5-8 mm long.

引證標本

TAIPEI: Wulai, Kuo 2261; Pataoershan, Kuo 3722. ILAN: Taipingshan, Suzuki 1100; Suao, Nakamura 5107; Kueishan, Kuo 322. NANTOU: Chitou, DeVol 8216, Huang 1418. CHIAYI: Mt. Alishan, Sasaki s. n. 1912. PINGTUNG: Tashulinshan, Kuo 1299. TAITUNG: Chingshuiyin, Shimizu 3904. HUALIEN: Mukuashan, Nakamura 4379; Chingshuishan, Nakamura 3799.

參考文獻

• SHIEH, WANG-CHUENG, DEVOL, CHARLES E. and KUO, CHEN-MENG. 1994. Flora of Taiwan, second edition 1: 454. (Fl. Taiwan 2nd edit.)