形態特徵

• Rhizome long creeping, 3-3.5 mm thick, usually without scales except at growing tip; scales brown, lanceolate, entire.
• Stipes distant, greenish, dark at base, 20-30 cm long, grooved; lamina 25-45 cm long, pinnate with a pinnatifid apex; lateral pinnae of 12 -18 pairs, petiolate, falcate, 6-10 cm long, 1.5 cm wide, unequal-sided at base, auricled on acroscopic side; upper margin of lower pinnae finely serrate.
• Sori linear, curved, usually single, rarely doubled, reaching from costa more than 1/2 way to margin, with only one row of sori on either side of costa.

分布

• 世界 : China, Korea, Japan, the Ryukyus.

引證標本

TAIPEI: Tatunshan, Kuo 1366. ILAN: Taipingshan, Suzuki 1108. TAOYUAN: Peichatienshan, Kuo 2664; Lalashan, Kuo 4777. MIAOLI: Kuantaoshan, Suzuki 20105. TAICHUNG: Lishan, Feung 294. NANTOU: Wushe, Masamune 2152; Chitou, Tsai 2167. CHIAYI: Mt. Alishan, Hsu 6756. TAITUNG: Liyuan, Tsai 4838.

參考文獻

• SHIEH, WANG-CHUENG, DEVOL, CHARLES E. and KUO, CHEN-MENG. 1994. Flora of Taiwan, second edition 1: 445. (Fl. Taiwan 2nd edit.)