形態特徵

• Epiphyte; rhizome short; roots fleshy.
• Fronds a long, pendent, simple ribbon-like blade, sometimes once or more forked at apex, narrowed at base; veins reticulate; fertile segment spike-like, attached to middle of lamina, in lower part of frond. Frond up to 1 m long, 1-4 cm wide, the margin entire; fertile spike 10-25 cm long (or longer), the stalk 3-5 cm long (or longer).
• Sporangia immersed in central axis of fertile segment.

分布

• 台灣 : Growing on trunks of trees or tree ferns, or persistent leaf bases of palms and in clumps of bird's nest ferns (<i>Asplenium nidus</i>).
• 世界 : tropical Asia and Pacific Islamds to Australia.

引證標本

TAIPEI: Wulai, Kuo 2275. ILAN: Bonbon, Kao 5094. TAOYUAN: Chatienshan, Suzuki 4584. TAICHUNG: Suyuan, Hsu 837. NANTOU: Wushe, Masamune 2221. TAITUNG: Kusuhara, Suzuki 119524. HUALIEN: Lanshan, Shieh & Tsai 1680*.

參考文獻

• SHIEH, WANG-CHUENG and DEVOL, CHARLES E. 1994. Flora of Taiwan, second edition 1: 68. (Fl. Taiwan 2nd edit.)