形態特徵

• Rhizome erect, stout, covered with stipe bases; scales brown to nearly black, somewhat clasping at base, margins paler, entire.
• Stipes tufted, about 15 cm long, stramineous, grooved above; lamina bipinnate, rather abruptly narrowed and pinnatifid at apex; pinnae sessile, widely spreading or falcate, 10-12 cm long, about 2 cm wide; pinnules with short petioles, opposite, cuneate, unequal-sided, and often auricled at base; upper surface with a long spine-like process at base of each pinnule, and smaller spines along costules; rachis stramineous, lower portion smooth and glossy, upper end and lower side of costa densely covered with short brownish glandular hairs.
• Sori linear, borne near base of veinlets.

分布

• 世界 : the Ryukyus.

引證標本

ILAN: Nanhutashan, Kao 8562. HSINCHU: Kuanwu, Kuo 3522. TAICHUNG: Piluchi, Shieh & Tsai 7211. NANTOU: Fonghuangshan, Tsai 10217. CHIAYI: Mt. Slishan, Kao 7476. TAITUNG: Yakou, Tsai 4831. HUALIEN: Taroko, Liu 112.

參考文獻

• SHIEH, WANG-CHUENG, DEVOL, CHARLES E. and KUO, CHEN-MENG, Flora of Taiwan, second edition 1: 426. 1994.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)