形態特徵

• Rhizomes slender, long-creeping, densely covered with short dark-brown hairs.
• Stipes usually 1 cm long, hairy at the base, narrowly winged upwards; rachis narrowly winged throughout; fronds bipinnatifid, commonly 2.5-5cm long and about half as wide, the lower pinnae gradually shortened; one or two forked lobes on the largest pinnae, the lobes about 1 mm wide; margins with 2 rows of elongated cells, those of the inner row appearing dark by transmitted light; ultimate segments linear, obtuse, occasionally notched at apex; veins bearing scattered glandular septate hairs.
• Sori usually only on the basal acroscopic lobes of the pinnae, almost parallel to the main rachis and well separated from it; indusia tubular, narrowly winged, the mouth abruptly dilated, trumpet-like, almost circular as seen from above; receptacles extruded.

分布

• 台灣 : Growing in moist habitats under deep forest shade.
• 世界 : the Ryukyus, the Philippines, Malaya, Indonesia, New Zealand, Polynesia and Micronesia.

引證標本

TAITUNG: Is. Lutao, Soma 112; Is. Lanyu, Shieh & Chen s. n. 1967, Tsai 11903*. HUALIEN: Kwarenko, Sasaki s. n. 1933.

參考文獻

• TSAI, JINN-LAI and SHIEH, WANG-CHUENG, Flora of Taiwan, second edition 1: 125. 1994.  (Fl. Taiwan 2nd edit.)