形態特徵

• Rachis twining, glabrous, bearing very short primary branches (2-4 mm long), dormant bud covered with stiff brown hairs; secondary branches opposite, 4-10 cm long; sterile pinnules 2-3 cm long, about 1 cm broad, ovate, often slightly lobed at base, glabrous, crenulate, articulate at base, when deciduous, leaving the petiole on the secondary branches; upper pinnules fertile.
• Sporangia borne in 2-rows on the finger-like projecting lobes, covered with scale-like indusia.

分布

• 世界 : Africa, S. E. Asia and Australia.

引證標本

TAIPEI: Waishuanchi, Kuo 3044*; Hsiaolutou, Hsu 9114. TAOYUAN: Masamune 321. NANTOU: Sun Moon Lake, Sasaki s. n. 1929. PINGTUNG: Nanjenshan, Hsu 7851. TAITUNG: Is. Lanyu, Sato s. n. 1933.

參考文獻

• DEVOL, CHARLES E. and SHIEH, WANG-CHUENG, Flora of Taiwan, second edition 1: 86. 1994.  (Fl. Taiwan 2nd edit.)