特徵描述
作者
SHIEH, WANG-CHUENG
型態特徵
Terrestrial ferns; rhizome erect or creeping, solenostelic or dictyostelic, clothed with scales. Fronds uniform or subdimorphic, 1-3-pinnate or variously divided, not articulate to rhizome; veins free or anastomosing without included free veinlets. Sori round or oblong, borne on distal ends or on the apical parts of veins, or forming continuous conenosori borne on the vascular commissure connecting the vein-ends, without true indusium, but protected by the modified and sharply reflexed leaf-margin and opening introrsely; sporangia developing in mixed sequence, with vertical annulus. Spores tetrahedral or rarely bilateral.
屬
A family of about 20 genera and 650 species, mainly tropical in distribution; six genera and 42 species in Taiwan.
參考文獻
Cryptogramma 珠蕨屬
作者
SHIEH, WANG-CHUENG
型態特徵
Rhizome creeping or ascending, solenostelic or dictyostelic, clothed with thin scales. Fronds small, herbaceous, glabrous, finely pinnately dissected, dimorphic; veins free. Sori submarginal, borne on the branches of forked veins; protected by a typically continuous reflexed margin, without paraphyses; annulus of 15-24 thickened cells. Spores tetrahedral, tuberculate.
