形態特徵

• Young fronds pinnate; pinnae larger and wider than in mature fronds.
• mature fronds bipinnate, about 2 m long; stipes green, smooth, streaked; pinnae 35-70 cm long; pinnules 5-15 cm long (usually 8-10), 10-20 mm wide (usually 10-12); veins simple or once forked; margins serrate; recurrent veins extending about half way to costule.
• Sori about 1.5 mm long, about 1 mm from margin.
• A very variable fern which is often split into several distinct species.

分布

• 台灣 : A very common fern in ravines and along stream banks.
• 世界 : Japan, the Ryukyus.

引證標本

TAIPEI: Yangmingshan, Kao 1790*. ILAN: Is. Kueishan, Suzuki s. n. 1932. TAOYUAN: Chatienshan, Suzuki 4571. MIAOLI: Yangmeishan, Kuo 3611. TAICHUNG: Tungshih, Simozawa 2. NANTOU: Chingshueikou, Huang 132. PINGTUNG: Nanjenshan, Kao 7317. HUALIEN: Chingshueishan, Shimizu 12574.

參考文獻

• DEVOL, CHARLES E. and SHIEH, WANG-CHUENG, Flora of Taiwan, second edition 1: 74. 1994.  (Fl. Taiwan 2nd edit.)