形態特徵

• Rhizome creeping, 4-5 mm wide, scales clathrate, peltate, ovate-lanceolate, dark brown.
• Stipes stramineous, not winged, articulate at base; shows 2 large bundles and about 3 smaller bundles arranged in an arc; fronds usually deeply pinnatifid with 2-5 pairs of lateral lobes, 2-3 cm wide; terminal lobe much the longest, apices obtuse or acute; margins entire, thickened; venation somewhat hidden, costa and costules raised on both sides; base of frond shortly decurrent; some fronds trifid or lanceolate.
• Sori round, large, in one or two rows on either side of costa, sunken, upper surface pustulate.

分布

• 世界 : India, South China, Bonin Isls., the Ryukyus, the Philippines, Polynesia, and Africa.

引證標本

KAOHSIUNG: Chishan, Chuang 4749. PINGTUNG: Oluanpi, Kuo 40; Tawu, Yamamoto s. n. 1931. TAITUNG: Is. Lutao, Kuo 3815; Is. Lanyu, Kuo 2180; Anshuo, Hsu 9581. HUALIEN: Suileng, Keng & Kao 2594; Chingshuishan, Nakamura 3519.

參考文獻

• SHIEH, WANG-CHUENG, DEVOL, CHARLES E. and KUO, CHEN-MENG, Flora of Taiwan, second edition 1: 504. 1994.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)