形態特徵

• Stipes 10-28 cm long, rachis usually viviparous near the apex, stipes and rachis densely clothed with linear to lanceolate scales; large basal scales rufo-brown, narrowly lanceolate, apex aristate with dark brown serration on margin, chartaceous; rachis scales two kinds of color, reddish brown and brown.
• Lamina pinnate to bipinnatifid, triangular-lanceolate or lanceolate, 15-35 cm long, 5-20 cm broad, basal pinna often deflexed downward, coriaceous, fronds sometimes subdimorphic with more or less narrower fertile ones; pinna lanceolate, 2.7-10 cm long, 1.2-2 cm broad, acuminate at apex, serrate on margin; small scales on undersurface of pinna deltoid with large serrations on basal margin, and prolonged at tip.
• Sori dorsal on veinlets, 2-3-seriate on each side of rachilla; indusia membraneous, margin fimbriate, caducous.

分布

• 台灣 : at medium altitude throughout the island.

引證標本

ILAN: Taipingshan, Kanehira & Sasaki s. n. 1918. HSINCHU: Tapachienshan, Tsai s. n. 1975; Luchangtashan, Fukuyama 3426. TAICHUNG: Anmashan, Feung & Kao 4419. NANTOU: Chitou, Huang 1511. CHIAYI: Mt. Alishan, Wang 1874. KAOHSIUNG: Tengchih, Shieh et al. 413. PINGTUNG: Peitawushan, Wang 2172.

參考文獻

• SHIEH,WANG-CHUENG, DEVOL CHARLES E. and KUO, CHEN-MENG, Flora of Taiwan, second edition 1: 347. 1994.  (Fl. Taiwan 2nd edit.)