形態特徵

• Stipes 30-55 cm long, scales on stipes brown, narrowly lanceolate, with entire or very short ciliate margin; small scales on rachis linear.
• Lamina bipinnate, 45-100 cm long, 20-30 cm broad, ovate-lanceolate, upper part abruptly reduced, acuminate, somewhat like a terminal pinnae, firm chartaceous; pinna linear-lanceolate, 10-17 cm long, 2.5-4 cm broad, apex acuminate; pinnules 14-18 mm long, 6-8 mm broad, margin serrate, often with short aristate at tip of each serration; small scales on undersurface of pinna deltoid, long-caudate at apex, coarsely serrate on basal margin.
• Sori dorsal or terminal on veinlets, nearer to costa than to margin; indusia very small, margin irregularly dentate, caducous.

分布

• 台灣 : only found in northern part, at high altitude, very rare.
• 世界 : Japan.

引證標本

ILAN: Nanhutashan, Kuo 5020, Wang 1688.

參考文獻

• SHIEH,WANG-CHUENG, DEVOL CHARLES E. and KUO, CHEN-MENG. 1994. Flora of Taiwan, second edition 1: 342. (Fl. Taiwan 2nd edit.)