形態特徵

• Rhizome short, stout.
• Stipes stramineous, 10-20 cm long or longer, scales scattered, pale brown, ovate or broadly lanceolate, some scales near base of stipe with a dark chestnut central band; laminae ovate in outline, tripinnatifid to 4-pinnatifid; lower 3-4 pairs of pinnae about equal in length, 7-10 cm long, or lower 1-3 pairs of pinnae gradually shortened, basiscopic pinnules on lower pairs of pinna longer than those on the acroscopic side; texture thin herbaceous; margins spinulose; scales on rachis, rachillae and costae pale brown, thin, rather sparse.

分布

• 台灣 : Seldom in forests.
• 世界 : North America, Europe, Siberia, Manchuria, Korea, Japan.

引證標本

ILAN: Nanhutashan, Kuo 5206. HSINCHU: Tapachienshan, Kuo 1769. CHIAYI: Mt. Alishan, Shieh & Tsai 6754. KAOHSIUNG: Kwaiku, Tsai 4841. HUALIEN: Hohuanshan, Kuo 199.

參考文獻

• SHIEH,WANG-CHUENG, DEVOL CHARLES E. and KUO, CHEN-MENG, Flora of Taiwan, second edition 1: 320. 1994.  (Fl. Taiwan 2nd edit.)