特徵描述
作者
SHIEH, WANG-CHUENG
型態特徵
Terrestrial; rhizome slender, creeping or erect, solenostelic or rarely dictyostelic, clothed with hairs or mixed narrow scales. Fronds pinnate to pinnately decompound, not articulate to rhizome; veins free or anastomosing without included free veinlets. Sori terminal on the veins, with a up-shaped or 2-lipped indusium, or the lower lip lacking, or the other continuous along the margin and on the connecting-vein, protected by the reflexed margin or with double indusium; spopangia developing in gradate or mixed sequence, with almost vertical annulus. Spores tetrahedral or rarely bilateral.
屬
A family of about 15 genera and 300 species, mainly tropical in distribution; seven genera and 24 species in Taiwan.
參考文獻
Pteridium 蕨屬
作者
SHIEH, WANG-CHUENG
型態特徵
Rhizome long-creeping, vascular system a complex dissected double solenostele, clothed with hairs. Fronds tripinnate to quadripinnatifid, subcoriaceous or coriaceous, more or less hairy; veins free. Sori submarginal, linear, borne on the connecting-veins; indusia double, the outer (false) one formed by the reflexed margin, the inner (true) one developed or obsolescent; annulus of 13-17 thickened cells. Spores tetrahedral, minutely papillose.
