形態特徵

• Rhizome erect; scales ovate, thin, pale brown.
• Stipes slender, stramineous, tufted, sparselly scaly at base, 6-16 cm long; lamina narrowly lanceolate, 15-25 cm long, about 4-6 cm wide, bipinnate, upper surface with spine-like processes borne along the costa, costules and veins; pinnae petiolalte, basal 1-3 pairs of pinnules petiolate, medial pinnules sessile or adnate; rachis stramineous, grooved above; basal pinnules of the lower and median pinnae deeply lobed.
• Sori linear, borne along basal part of veinlets; indusia brown, erose, usually straight, sometimes J-shaped and crossing a veinlet.

分布

• 世界 : southern Japan.

引證標本

TAIPEI: Ruggyahu, Suzuki 16462. ILAN: Taipingshan, Kao 4786. NANTOU: Noko, Fukuyama s. n. 1928. CHIAYI: Mt. Alishan, Tsai 8019; Mt. Niitaka, Suzuki s. n. 1933. KAOHSIUNG: Kuanshan, Sasaki s. n. 1933. TAITUNG: Ramaramani, Rao 6854. HUALIEN: Lintienshan, Feung 36; Mukuashan, Nakamura 4458.

參考文獻

• SHIEH, WANG-CHUENG, DEVOL, CHARLES E. and KUO, CHEN-MENG, Flora of Taiwan, second edition 1: 426. 1994.  (Fl. Taiwan 2nd edit.)