形態特徵

• Rhiizome long-creeping, 3-5 mm wide; scales entire, ovate, clathrate, discolorous, margins pale-brown, lumina clear, centers dark brown, opaque.
• Stipe stramineous or castaneous; frond broadest near base, very long, attenuate, usually 2-3 cm wide (1.5-4 cm wide), 25-55 cm long; venation hidden.
• Sori round, large, borne on upper 1/2 of frond, nearer costa than margin, slightly sunken; paraphyses peltate, clathrate, round, centers dark, margin entire.

分布

• 世界 : China.

引證標本

ILAN: Taipingshan, Chuang & Kao 4147. TAOYUAN: Lalashan, Huang7654. HSINCHU: Kuanwu, Kuo 3514. TAICHUNG: Anmashan, Liu et al. s. n. 1957. NANTOU: Chitou, Huang 1502. CHIAYI: Mt. Alishan, Kao 5625. KAOHSIUNG: Shihshan, Kuo 670. PINGTUNG: Tashulinshan Kuo 1323. TAITUNG: Baiyu Lake, Kao 6031. HUALIEN: Chingshuishan, Nakamura 3675.

參考文獻

• SHIEH, WANG-CHUENG, DEVOL, CHARLES E. and KUO, CHEN-MENG, Flora of Taiwan, second edition 1: 492. 1994.  (Fl. Taiwan 2nd edit.)