形態特徵

• Rhizome short, stout, erect or somewhat prostrate, covered with old leaf bases, aerophores restricted to leaf bases, without aerophores on upper stipe.
• Sterile fronds 30 to 75 cm tall, 20 to 25 cm broad; stipe usually 20 to 30 cm long, tufted; triangular in c. s. at base, oval in upper stipe; lamina pinnate, the lower and medial pinnae petiolate, the upper pairs sessile or occasionally with one or more of the upper most pinnae adnate, the terminal pinna similar to the lateral pinnae, usually with one or two lobes at base; pinnae 8 to 20 cm long, 1.2 to 1.8 cm broad, linear-lanceolate, narrowed at base, the margins serrate towards apex, nearly entire towards base, apex acuminate, base rounded or acute.
• Fertile fronds 50 to 80 cm long; stipes usually 20 to 50 cm long; fertile pinnae 6.5 to 12 cm long. narrowly linear.

分布

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

引證標本

TAIPEI: Chihsinshan, Kuo 460. ILAN: Nanhutashan, Kuoh 5498. HSINCHU: Chutung, Chuang 1396. TAICHUNG: Anmashan, Feung & Kao 4425. NANTOU: Chitou, Kao 7740. KAOHSIUNG: Kueiku, Wang s. n. 1972*; Tengchih, Kuo 2405. PINGTUNG: Paiwan, Matuda s. n. 1917. TAITUNG: Wushan, Hosokawa 5361a. HUALIEN: Fongshan, Lia et al. 43. Mukuashan, Kao 4189.

參考文獻

• SHIEH, WANG-CHUENG, DEVOL, CHARLES E. and LU, CHIN-YI. 1994. Flora of Taiwan, second edition 1: 135. (Fl. Taiwan 2nd edit.)