Hymenophyllaceae

膜蕨科

PPG

Hymenophyllaceae 膜蕨科

特徵描述

屬列表

標本列表

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.

參考文獻

TSAI, JINN-LAI and SHIEH, WANG-CHUENG, Flora of Taiwan, second edition 1: 99. 1994. (Fl. Taiwan 2nd edit.)

Hymenophyllum 膜蕨屬

作者

TSAI, JINN-LAI and SHIEH, WANG-CHUENG

型態特徵

Terrestrial or epiphytic, with slender rhizomes. Fronds small. pinnately compound, the margins toothed but not hairy. Indusia bivalvate, deeply cleft to the base; receptacles not or slightly extruded; sporangia sessile.