形態特徵

• Rhizome erect, sometimes becoming like a short tree trunk; scales dark, very narrow.
• Stipes stout, tufted, stramineous, darker at base, 35-70 cm long, with 4 longitudinal grooves, densely covered with easily abraded narrow linear-lanceolate brown scales; fronds in a terminal crown; lamina large, tripinnate to 4-pinnatifid; pinnae petiolate, oblong-lanceolate, to 20-25 cm long; pinnules subsessile to short petiolate, oblong-lanceolate, apex acute or acuminate, 4.5-6 cm long, 1.5-2 cm wide; veins usually forking; margins serrate.
• Sori oblong, basal on veinlets, single except for the basal acroscopic sorus.

分布

• 世界 : Southern Japan.

引證標本

TAIPEI: Wulai, Tsai 7994. ILAN: Taipingshan, Chuang 4752; Nanshan, Kuo 480. HSINCHU: Tapachienshan, Kuo 1737; Kuanwu, Huang 6628; Yuanyanghu, Kuo 1505. TAICHUNG: Kukuan, Tsai 10149; Anmashan, Feung 4418. NANTOU: Chitou, Huang 1472; Kuantaochi, Yang 143. CHIAYI: Mt. Alishan, Chao 88; Fenchihu, Kuo 1658. KAOHSIUNG: South Cross Highway, Cheng 511; Tengchih, Kuo 2422. PINGTUNG: Chingshuiyin, Shieh & Tsai 6833; Tashulinshan, Kuo 1303. HUALIEN: Chingshuishan, Nakamura 3677.

參考文獻

• SHIEH, WANG-CHUENG, DEVOL, CHARLES E. and KUO, CHEN-MENG, Flora of Taiwan, second edition 1: 441. 1994.  (Fl. Taiwan 2nd edit.)