形態特徵

• Stipes 13-35 cm long, scaly, scales on stipes dark brown or blackish, ovate to lanceolate, those on rachis two kinds, one growing in the adaxial groove, blackish brown, linear and spreading, the other brown and appressed, deltoid or lanceolate with ciliate margin.
• Lamina pinnate, 15-30 cm long, 5-12 cm broad, lanceolate, chartaceous, monomorphic, sometimes subdimorphic with slightly narrower fertile frond, rachis of sterile frond often prolonged and viviparous at tip; pinna 3-6 cm long, 6-15 mm broad, falcate lanceolate, acuminate at apex, undulate on margin; small scales on undersurface of pinna deltoid and peltate.
• Sori dorsal on veinlets, arranged in 1-3 rows on each side of costa; indusia very small, caducous.

分布

• 台灣 : in low to medium altitude throughout the island.
• 世界 : China, Korea, Japan and the Ryukyus.

引證標本

ILAN: Taipingshan, Suzuki 1110; Nanshan, Kuo 473. TAOYUAN: Lalashan, Peng 1075. HSINCHU: Shihtoushan, Kuo 824. MIAOLI: Tahu, Cheng 55. TAICHUNG: Kukuan, Kuo 875. NANTOU: Hoshie tract, Huang 2185. KAOHSIUNG: Tengchih, Kuo 768. TAITUNG: Tuluanshan, Yamamoto 1030. HUANLIEN: Tyuosenzan, Suzuki 16217.

參考文獻

• SHIEH,WANG-CHUENG, DEVOL CHARLES E. and KUO, CHEN-MENG, Flora of Taiwan, second edition 1: 343. 1994.  (Fl. Taiwan 2nd edit.)