形態特徵

• Rhizome about 10 mm thick; scales ovate-acuminate, entire, dark brown.
• Stipes approximate, stout, c. s. triangular with 2 large and 3 small bundles; fronds elliptical, 55-100 cm tall, 9-12 cm wide at middle or about middle, tapering to apex, gradually narrowed to base of stipe; texture thin; margins entire; lateral main veins distinct, parallel, 8-10 mm apart, areolae with included forked veinlets.
• Sori small, round, abundant, irregularly spaced between main veins.

分布

• 世界 : China, India, Ceylon, Tonkin, Laos, Thailand and the Philippines.

引證標本

TAIPEI: Chingpingshan, Kuo 271. ILAN: Taipingshan, Suzuki 12. HSINCHU: Nueifanpeishan, Simada 84. TAICHUNG: Tahsuehshan, Kao 8635. NANTOU: Chitou, Kuo 128; Sun Moon Lake, DeVol 1249. CHIAYI: Mt. Alishan, Sasaki s. n. 1912. KAOHSIUNG: Hsinwanlin, Suzuki 2088. PINGTUNG: Adern, Suzuki; 11141. TAITUNG: Tawushan, Matuda 408. HUALIEN: Chingshuishan, Nakamura 3800.

參考文獻

• SHIEH, WANG-CHUENG, DEVOL, CHARLES E. and KUO, CHEN-MENG, Flora of Taiwan, second edition 1: 501. 1994.  (Fl. Taiwan 2nd edit.)