形態特徵

• Rhizome short-creeping, about 2 mm thick, densely scaly; scales membranous, dark-brown, distinctly clathrate, entire, 1.5-3 mm long.
• Fronds congested, monomorphous or nearly so, sessile, yellowish-green, coriaceous, entire, usually more or less revoluted; fertile fronds linear-lanceolate, 12-16 cm long by 7-10 mm wide; sterile ones narrowly oblanceolate, a little shorter than the fertile but broader; costa strongly raised beneath, somewhat flattened above near the base; veins hidden, areae mostly without frce included veinlets.
• Sori confined to the upper one-third or half portion of the lamina, very oblique.

分布

• 台灣 : Growing on mossy tree trunks in deep mountain forests of medium elevation, rare.

引證標本

KAOHSIUNG: Keinanzan, Tagawa 1661.

參考文獻

• SHIEH, WANG-CHUENG, DEVOL, CHARLES E. and KUO, CHEN-MENG. 1994. Flora of Taiwan, second edition 1: 496. (Fl. Taiwan 2nd edit.)