形態特徵

• Small epiphytes. Rhizome very long-creeping, about 1 mm wide; c. s. oval, with about 4 equal-sized bundles; scales sparse, clathrate, acicular with broad and forked bases.
• Stipes 1-2 cm apart; fronds small, dimorphic; sterile fronds variable in size and shape, usually ovate or orbicular, nearly sessile, cuneate at base, 1-2 cm long by 1-1.5 cm wide, or varying to oblanceolate and stipitate, to about 4 cm long and 6 mm wide; margins entire; texture somewhat fleshy; venation reticulate, hidden; fertile fronds narrowly linear, 2-5 mm wide, to about 6 cm long.
• Sporangia in a continuous linear row on either side of costa (coenosori), later nearly covering the undersurface except along the margins; covered with clathrate, peltate scales when young.
• Anumber of varieties have been recognized, but in the presence of abundant material, the distinctions between them are not sharp.

分布

• 世界 : Korea, Japan, the Ryukyus and China.

引證標本

TAIPEI: Yangmingshan, DeVol 4465*. ILAN: Kueishan, Kuo 1588. HSINCHU: Shihtoushan, Kuo 838. MIAOLI: Nanchuang, Hsu 12525. TAICHUNG: Pahsienshan, Suzuki s. n. 1929. NANTOU: Kuantaochi, Kuo 4266. CHIAYI: Tulishan, Tsann 16; Fengchihu, Feung 232. KAOHSIUNG: Shanping, Kuo 1895. PINGTUNG: Nanjenshan, Yang 119. TAITUNG: Chingshuiyin, Hsu s. n. 1972; Is. Lanyu, Huang 7542. HUALIEN: Tienhsiang, Shimizu & Kao 10534.

參考文獻

• SHIEH, WANG-CHUENG, DEVOL, CHARLES E. and KUO, CHEN-MENG. 1994. Flora of Taiwan, second edition 1: 487. (Fl. Taiwan 2nd edit.)