Hymenophyllaceae
膜蕨科
特徵描述
作者
TSAI, JINN-LAI and SHIEH, WANG-CHUENG
型態特徵
Mostly small epiphytic, petrophilous or terrestrial, usually delicate plants; rhizomes usually long-creeping and slender, covered with hairs, bearing distant fronds, or sometimes short and erect with clustered fronds. Fronds usually small, of many shapes; the blades only 1-cell thick, simple or variously divided, the veins free, the ultimate segments with only a single vein. Sori marginal or extramarginal, on a slender extension of the vein constituting a receptacle, surrounded by a tubular or sometimes 2-valved involucre-like indusium; sporangia borne on an elongate or capitate receptacle, sessile, the annulus complete, oblique, the dehiscence vertical. Spores trilete. Gametophytes filamentous (algal-like) or ribbon-like.
屬
A family of about 34 genera and 700 species, mostly tropical and subtropical, 15 genera in Taiwan.
