形態特徵

• Stipes 9-22 cm long, scales sparse, brown, broadly linear to lanceolate, acuminate at apex, truncate at base.
• Lamina pinnate, 17-31 cm long, 3.5-7.5 cm broad, linear-lanceolate, firm-chartaceous; pinna 2.5-5 m long, 6-10 mm broad, the length more than three times the width, subrhombic-oblong to falcate-lanceolate, apex obtuse to acuminate, margin serrate to subduplicate-inciso-serrate, auricles obtuse or round or rarely acute, lower edge of the base curved in a long slender form; small scales on undersurface of pinna branched, clavate with gland-like cell at the tip.
• Sori terminal on veinlets, often on the upper part of frond; indusia small, with irregularly dentate margin, caducous.

分布

• 台灣 : at low altitude.
• 世界 : The Ryukyus.

引證標本

TAIPEI: Shiting, Wang 2465. TAOYUAN: Lalashan, Peng 1126. HSINCHU: Mendoyoushan, Suzuki 20367. MIAOLI: Shihtoushan, Kuo 827. TAICHUNG: Tongshih, Simozawa 584. NANTOU: Luku, Wang 300; Chitou, Kuoh 3603. CHIAYI: Hotapu, Sasaki s. n. 1930. KAOHSIUNG: Sanping, Kuo 1920.

參考文獻

• SHIEH,WANG-CHUENG, DEVOL CHARLES E. and KUO, CHEN-MENG, Flora of Taiwan, second edition 1: 340. 1994.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)