形態特徵

• Rhizomes creeping, stout, scaly.
• Fronds more or less distant, 25-60 cm long; stipes slender, generally longer than the blades, not winged, grooved, light brown to chestnut, covered with ctenitis hairs; scales on rhizomes and the bases of stipes narrowly lanceolate, entire, dark brown; laminae broadly triangular-ovate, generally as wide as long, pinnate with a deeply trilobed terminal pinna and 1-2 pairs of petiolulate lateral pinnae; lower lateral pinnae with a pair of basal lobes, the basiscopic one enlarged, falcate; rachises and both surfaces of costae and veins covered with ctenitis hairs.
• Sori small, round to elongate, multiseriate, borne on the junction of veinlets, more plentiful towards margins than costae; indusia reniform, fimbriate, fugacious.

分布

• 台灣 : Fairly common in the forests at lower elevations.
• 世界 : China, India, Ceylon, Burma, Indo-China, the Ryukyus, Malay Isls. and Polynesia.

引證標本

TAIPEI: Shihlin, Tanaka 13506; Hsintien, Tsai 1811. TAICHUNG: Kukuan, Tsai 1694. NANTOU: Kuantaochi, Kuo 2006, Tsai 4296; Chingshuikou, Huang 282. CHIAYI: Peikan, Sasaki s. n. 1922; Mt. Alishan, Mo s. n. 1968. KAOHSIUNG: Shanping, Kao 1893, Shieh & Tsai 6618. PINGTUNG: South Cape, Liu & Keng 2740; Nanjenshan, Tsai 1305. TAITUNG: Tawu, Chuang, Chao & Kao 3451.

參考文獻

• TSAI, JINN-LAI and SHIEH, WANG-CHUENG, Flora of Taiwan, second edition 1: 301. 1994.  (Fl. Taiwan 2nd edit.)