形態特徵

• Rhizome scales brown, lanceolate, entire.
• Stipe smooth, green, 30-45 cm long; primary pinnae lanceolate, 30-65 cm long, glabrous except for a few short straight or stellate hairs on lower surface of young fronds; basal pinnules much shortened; ultimate segments oblique to costa; dormant bud covered with ovate, entire, light brown scales, without stipule-like bracts.
• Sori usually with 4 sporangia; paraphyses few, pale, straight.

分布

• 世界 : China, Japan, the Philippines and Vietnam.

引證標本

ILAN: Yuanyanghu, Kuo 1511.

參考文獻

• DEVOL, CHARLES E. and SHIEH, WANG-CHUENG, Flora of Taiwan, second edition 1: 98. 1994.  (Fl. Taiwan 2nd edit.)