形態特徵

• Rhizome long-creeping, 1-2 mm thick; scales discolorous, especially at the broad base, peltate, clathrate, central cells dark brown or black, opaque, basal marginal cells with clear lumen.
• Stipes slender, 5-12 mm apart, 1-3 cm long; c. s. wirh 5 bundles in an arc, those at either end larger; fronds narrowly linear-elliptical, 3-10 mm wide, 10-20 cm long, tapering to eighter end; venation obscure, rolling towards center in dry weather.
• Sori round or oval, closely spaced, in a single row on either side of costa, often wider than the space between costa and margin, and then protruding over the edge like beads; paraphyses round, peltate, clathrate, centers dark, margins pale.

分布

• 世界 : South and East China, Korea, Japan, the Ryukyus and the Philippines.

引證標本

TAIPEI: Yangmingshan, DeVol 4464. ILAN: Mt. Bonbon, Kao 5935. TAOYUAN: Lalashan, Huang 7666. HSINCHU: Tapachienshan, Kuo 1773. TAICHUNG: Pahsienshan, Liu et al. 372. NANTOU: Chingshuikou, Huang 939. CHIAYI: Mt. Alishan, Kao 3347; Tongpu, Tu 394. KAOHSIUNG: Shihshan, Hsu s. n. 1972. TAITUNG: Chingshuiyin, Sasaki s. n. 1932. HUALIEN: Lintienshan, Feung 185.

參考文獻

• SHIEH, WANG-CHUENG, DEVOL, CHARLES E. and KUO, CHEN-MENG, Flora of Taiwan, second edition 1: 493. 1994.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)