形態特徵

• Stipes 6-28 cm long, sparsely scaly, scales brown to dark brown, lanceolate, those on rachis pale brown, usually filiform at tip, with sinuate cells.
• Lamina 10-30 cm long, 2-4.5 cm broad, pinnate, herbaceous, the lowest pinnae usually elongate and pinnate, sometimes about the size of others but pinnatifid; pinna square-lanceolate, 1-2.5 cm long, 3.5-6 mm broad, apex acute, margin dentate and mucronate; small scales on undersurface of pinna short, clavate, unbranched.
• Sori terminal on veinlets, medial to costa; indusia small, margin entire, caducous.

分布

• 台灣 : from low to medium altitude, very common.
• 世界 : S. China, Japan and the Ryukyus.

引證標本

TAIPEI: Chutzushan, Wang 463; Tatungshan, Kuo 1399. ILAN: Lankanshan, Peng 1628; Nanhutashan, Wang 1685. TAOYUAN: Peichatienshan, Kuo 2662. HSINCHU: Luchiantashan, Fukuyama 3427. MIAOLI: Yangmeishan, Kuo 2379. TAICHUNG: Tahsuehshan, Kuo 7462. NANTOU: Tungpu, Wang 1998. CHIAYI: Alishan, Kuoh 7468. KAOHSIUNG: Tengchih, Kuo 715. PINGTUNG: Peitawushan, Wang 2159. TAITUNG: Lisung, Wang 2048. HUALIEN: Chingsuishan, Wang 2301.

參考文獻

• SHIEH,WANG-CHUENG, DEVOL CHARLES E. and KUO, CHEN-MENG, Flora of Taiwan, second edition 1: 340. 1994.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)