形態特徵

• Rhizome short, ascending; scales thin, pale-brown, broad at base, attenuate.
• Stipes slender, tufted, stramineous, about 35 cm long, sparsely scaly at base; lamina broadly ovate, tripinnate to 4-pinnatifid, 35-45 cm long; pinnae opposite, lower pairs petiolate, first pinnules much shortened; scales on rachis small. whitish, linear-lanceolate.
• Sori round.

分布

• 世界 : Japan, Bonin Islands.

引證標本

TAOYUAN: Lalashan, Simozawa 258; Peichatienshan, Kuo 2529. TAICHUNG: Pahsienshan, Suzuki 2838. NANTOU: Wanghsiang, Tsai 10373; Fonghuanshan, Kuo 603. CHIAYI: Mt. Alishan, Kuo 3146. KAOHSIUNG: Cross Island Highway, Kuo 2752. PINGTUNG: Tashulinshan, Kuo 1320. TAITUNG: Chihpen, Suzuki 11091. HUALIEN: Tarokotaishan, Sasaki s. n. 1933.

參考文獻

• SHIEH, WANG-CHUENG, DEVOL, CHARLES E. and KUO, CHEN-MENG, Flora of Taiwan, second edition 1: 427. 1994.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)