形態特徵

• Caudex stout, erect.
• sterile fronds 32-42 cm tall, 10-16 cm wide; stipes 10-25 cm long, slightly dilated at base, aerophores few; lamina pinnate, rachis not winged on lower half of frond; lower pinnae nearly sessile; upper pinnae adnate, the lower pairs narrowed on both sides; all pinnae widely spreading, somewhat falcate; margins finely serrate; terminal pinna similar to the lateral ones, adnate at base to the uppermost lateral pinna.
• Fertile fronds 70-80 cm tall; stipes about 40 cm long; fertile pinnae straight, about 10 cm long, the lower and medial ones petiolate, the uppermost ones sessile.

分布

• 世界 : China, Korea, Japan, the Ryukyus and Northern India.

引證標本

KAOHSIUNG: Buisan, Sasaki s. n. 1916.

參考文獻

• SHIEH, WANG-CHUENG, DEVOL, CHARLES E. and LU, CHIN-YI, Flora of Taiwan, second edition 1: 137. 1994.  (Fl. Taiwan 2nd edit.)