形態特徵

• Rhizomes suberect, stout, clothed at the apex with stiff narrow dull brown scales.
• Stipes about 50 cm long, scaly at base; fronds bipinnatifid, the laminae to about 60 cm long and 30 cm wide; lowest pinnae short-stalked, shorter than the above and more narrow to the base on the basiscopic side, the upper sessile; lobes of pinnae oblique, slightly falcate, their edges crenate-serrate, a sharp erect tooth present in each sinus between them; veins free, 6-10 pairs in each lobe, forked near the base and sometimes the basiscopic branch forked again.
• Sori terminal on the acroscopic branch of veins, midway between costa and margin; indusia reniform, entire.

分布

• 台灣 : Growing in the forest floors.
• 世界 : China, Sikkim, Bhutan, Assam, E. Burma, N. Thailand, S. Vietnam.

引證標本

TAICHUNG: Chiapaotai, Shieh & Tsai 3345. KAOHSIUNG: Tienchih, Tsai 9650.

參考文獻

• TSAI, JINN-LAI and SHIEH, WANG-CHUENG, Flora of Taiwan, second edition 1: 294. 1994.  (Fl. Taiwan 2nd edit.)