形態特徵

• Rhizome stout, ascending, covered with persistent stipe bases; scales thin, entire, pale brown to brown, ovate-lanceolate.
• Stipes 10-18 cm long, stramineous, scaly at base, sparsely scaly upwards; lamina finely dissected, to 25 cm long, by 12 cm wide, lanceolate, tripinnate; rachis stramineous; rachillae narrowly winged; pinnae ascending, with very short petioles, linear-lanceolate, attenuate; pinnules usually anadromous, cut to costa, lobes ending in sharp teeth; upper surface with long spine-like processes along costules.
• Sori often covering the entire undersurface when mature and protruding past the narrow lobes of the pinnules; idusia oblong or reniform.

引證標本

ILAN: Taipingshan, Chuang 4698. HSINCHU: Kuanwu, Kuo 3528*; Kuishan, Sasaki s. n. 1932. TAICHUNG: Hsiaoshuehshan, Feung 4399. NANTOU: Yushan, Shieh & Tsai 6409. CHIAYI: Mt. Alishan, Chao 74. KAOHSIUNG: Kueiku, Cheng 516.

參考文獻

• SHIEH, WANG-CHUENG, DEVOL, CHARLES E. and KUO, CHEN-MENG, Flora of Taiwan, second edition 1: 418. 1994.  (Fl. Taiwan 2nd edit.)