形態特徵

• Stipes 10-30 cm long, scaly, basal scales brown, ovate to lanceolate, margin nearly entire, apex acuminate, scales on rachis and costa very narrowly lanceolate or linear, sparsely ciliate on margin, apex filiform.
• Lamina pinnate, 23-46 cm long, 4-9 cm broad, linear-lanceolate, chartaceous; pinna 2.5-5 cm long, 6-10 mm broad, falcate-lanceolate, apex acuminate or rarely acute, base broadly cuneate to nearly rectangular, anterior side strait and usually parallel to rachis, costa usually perpendicular to rachis, weakly toothed on margin, aristate at tip of each tooth, dark green in color; small scales on undersurface of pinna very narrowly lanceolate.
• Sori terminal on veinlets, medial or a little nearer to margin than to costa; indusia very small, caducous.

分布

• 台灣 : at medium altitude (1,500-2,000m).
• 世界 : China and Indo-China.

引證標本

ILAN: Nanhutashan, Kuo 5024. HSINCHU: Chutong, Suzuki 20371. TAICHUNG: Lishan, Kuo 8767. NANTOU: Shalihsenhsi, Wang 1971. TAITUNG: Kiriyama, Suzuki 10948. HUALIEN: Hoping tract, Kuo 7829; Chingsuishan, Wang 2256.

參考文獻

• SHIEH,WANG-CHUENG, DEVOL CHARLES E. and KUO, CHEN-MENG, Flora of Taiwan, second edition 1: 336. 1994.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)