形態特徵

• Caudex erect, rather stout.
• Sterile frond 35 to 45 cm tall, 10 to 15 cm wide; stipes 12 to 20 cm long, base not much dilated, bearing a few (1-3) aerophores; c. s. of stipe tetragonal above, triangular at base; lamina deeply pinnatifid; apex pinnatifid or with cn elongated terminal segment being somewhat lobed near base and serrate towards apex; basal pairs of pinnae not shortened or only slightly so, cut away on abaxial side at base and recurrent an adaxial side.
• Fertile fronds 45 to 75 cm tall; stipes 35 to 45 cm long; fertile pinnae straight or falcate, 5 to 10 cm long, the lower pairs longest.

分布

• 世界 : from Northern India to the Philippines, Japan and Taiwan.

引證標本

TAIPEI: Chihsinshan, Chuang 2765; Tatungshan, Kuo 1360. ILAN:Rankanzan, Hayata 1509. HSINCHU: Chalichienshan, Ito 1508. TAOYUAN: Peichatienshan, Kuo 1685. MIAOLI: Nanchuang, Hsu 12957. KAOHSIUNG: Liukuei, Hsu & Kuoh s. n. 1977. PINGTUNG: Kutzulunshan, Kuo 1280. TAITUNG: Chinshuiyin, Simizu s. n. 1937.

參考文獻

• SHIEH, WANG-CHUENG, DEVOL, CHARLES E. and LU, CHIN-YI. 1994. Flora of Taiwan, second edition 1: 137. (Fl. Taiwan 2nd edit.)