形態特徵

• Main stem terete scandent, reaching to the tops of trees, much branched; aerial stem with small, widely spaced scales similiar to those on rhizome; ultimate leafy branches flattened, dichotomously forking; ultimate sterile branchlets widely spreading, 5-10 cm long; ultimate fertile franchlets in long subparallel sprays, 15-25 cm long.
• Vegetative leaves dimorphic on sterile branches, adnate most their lengths, free tips of the curved lateral sterile leaves 2-3 mm long; free tips of fertile leaves 1 mm long or less.
• Strobili 10-15 mm long, borne in large numbers on lateral much forked branches; sporophylls broadly ovate with an acuminate or caudate tip, the margins erose.

分布

• 台灣 : Scandent on trees and bushes in mountain peaks.
• 世界 : from tropical Asia to southern Japan.

引證標本

TAIPEI: Niaotsueichienshan, DeVol 8347; Chutzhu, Simada 982. ILAN: Taipingshan, Shieh & Tsai 7487*. NANTOU: Kuantaochi, Kuo 2032. CHIAYI: Mt. Alishan, Kao 7487. PINGTUNG: Machia, Huang & Kao 7385.

參考文獻

• TSAI, JINN-LAI and SHIEH, WANG-CHUENG, Flora of Taiwan, second edition 1: 31. 1994.  (Fl. Taiwan 2nd edit.)