形態特徵

• Rhizome short-creeping, scaly at apex.
• Fronds dimorphous, simply pinnate, stipes stramineous, glabrous, scaly at base. Sterile fronds: stipes 11-30 cm long; lamina consisting of a terminal pinna and 1-3 pairs of lateral pinnae; lateral pinnae linear-oblong, 10-20 cm long, coriaceous, glabrous, sessile, acute, irregularly serrate, terminal one much longer.
• Fertile fronds: stipes 14-50 cm long; lateral pinnae 20-30 cm long, short-stalked, linear.

分布

• 世界 : Japan, the Ryukyus.

引證標本

NANTOU: Wushe, Masamune, Mori & Nakamura s. n. 1939.

參考文獻

• SHIEH, WANG-CHUENG, Flora of Taiwan, second edition 1: 231. 1994.  (Fl. Taiwan 2nd edit.)