形態特徵

• Rhizomes short-creeping, stout, ascending, densely scaly, especially at apex with long reddish-brown shaggy scales.
• Stipes tufted, stramineous, decumbent at base, 30 cm long, deeply grooved, densely covered with pale brown to reddish-brown narrowly lanceolate hair-pointed scales, 10-18 mm long; upper stipes and rachis covered with appressed glossy, clathrate scales, the cell walls brown; fronds pentagonal, 4-pinnatifid, 60-130 cm long, 22-40 cm wide; pinnae 9-12 on each side the lowest largest, long-petiolate; first basiscopic pinnules larger than the others, the pinnules oblong-ovate to lanceolate, 2-5 cm long, obtuse to subacute, crenate to deeply lobed, sparsely pilose above, the costae and costules appressed-scaly.
• Sori terminal on lateral veinlets near the costules; indusia thin, erose-ciliate, fugacious.

分布

• 台灣 : Growing in somewhat dry montane forests at higher elevations.
• 世界 : South China, Japan, the Ryukyus and the Philippines.

引證標本

TAIPEI: Taipei city, Tanaka 13591. ILAN: Mt. Oobi, Masamune 3253. HSINCHU: Kaotai, Sasaki s. n. 1917. NANTOU: Chingshuikou, Huang & Kao 816. CHIAYI: Mt. Alishan, Kao 4225, Tsai 8018. PINGTUNG: Shuangliu, Shieh & Tsai 1453; Kenting, Kuoh s. n. 1971. TAITUNG: Hsiangyang, Tsai 4837; Iwan, Kao 6133. HUALIEN: Tachingshui; Shimizu & Kao 11667.

參考文獻

• TSAI, JINN-LAI and SHIEH, WANG-CHUENG. 1994. Flora of Taiwan, second edition 1: 283. (Fl. Taiwan 2nd edit.)