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Hymenophyllaceae

膜蕨科

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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.

A family of about 34 genera and 700 species, mostly tropical and subtropical, 15 genera in Taiwan.

參考文獻

Callistopteris 毛桿蕨屬

作者

TSAI, JINN-LAI and SHIEH, WANG-CHUENG

型態特徵

Epiphytic or terrestrial ferns; rhizomes stout, ascending. Fronds polystichous, large for the family, pinnately decompound, soft in texture, major axes soft-hairy, margin entire, cell-walls thin; veins having small spiral tracheids and long pitted sclerenchyma cells with wide lumen. Indusia immersed, obconic or urceolate, mouth entire or cleft; receptacles extruded.

參考文獻

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