特徵描述
作者
TSAI, JINN-LAI and SHIEH, WANG-CHUENG
型態特徵
Rhizomes creeping or scandent, dorsiventral, rooting only on the ventral surface and two or more rows of fronds on the dorsal surface of rhizomes. Stipes distant or tufted, bearing peltately attached, ovate or lanceolate, brown scales at base, with one or two grooves on upper side and rounded on underside; fronds dimorphic, simple or pinnate; pinnae (when present) entire or deeply lobed, in some cases jointed to the rachises; basiscopic edges of pinnae decurrent on a wing or ridge on either side of the rachises; veins free (simple or once forked) or anastomosing and forming areolae without included veinlets, or with free excurrent veinlets directed away from the costae. Fertile fronds usually with longer stipes and narrower laminae. Sori acrostichoid.
屬
A family of about 8 genera with over 600 species, distributed in tropics and subtropics, 4 genera in Taiwan.
參考文獻
Elaphoglossum 舌蕨屬
作者
TSAI, JINN-LAI and SHIEH, WANG-CHUENG
型態特徵
Epiphytic or terrestrial ferns, usually of moderate size; rhizomes short-creeping, or ascending, paleate. Stipes mostly approximate or caespitose, rarely remote, articulate to enlarged phyllopodia; stipes and costae with a shallow groove on upper side; fronds simple and entire, firm to hard-coriaceous, paleate or glabrescent; sterile fronds elliptic to lanceolate, the margins often white, thin or thickened, extended; veins free, simple or once forked, rarely uniting at tip. Fertile fronds usually smaller and narrower than the sterile, often longer-stalked. Sori acrostichoid, indusia and paraphyses wanting. Spores elliptic, brownish, with thick epispores.
