| Author||R.E. Holttum|
|Journal||Flora Malesiana - Series 2, Pteridophyta|
|Abstract||Rhizome usually short-creeping with closely-placed fronds, less often widecreeping or somewhat erect, the young parts covered with thick septate hairs (except Mohria, not Malaysian), structure dorsiventral or radial, vascular strand in Malaysian genera a protostele (medullated in Schizaea). Fronds of very varied structure, their branching showing varying gradations from dichotomous to pinnate; veins usually free; sporangia borne on specialized segments of the fronds (sorophores) except in the non-Malaysian Mohria. Sorophores at the ends of veins of fertile leaflets (Lygodium), or in small pinnate groups at the apex of a frond or of its branches (Schizaea), or confined to special branches of the frond (Anemia, not Malaysian). Sporangia arising marginally but becoming superficial due to subsequent extra-marginal growths, large, borne on short massive stalks or sessile, with an almost apical annulus of a single row of elongate thickened cells, dehiscing on a line from annulus to base. Spores trilete or monolete (Schizaea only), without perispore, the surface usually sculptured. Gametophytes filamentous in Schizaea, thalloid in other genera, symmetrical or not.|
Distribution. The Malaysian genera Schizaea and Lygodium are pantropic with a few outlying species of both in temperate regions (U.S.A., S. Africa, Chile, Japan, and New Zealand). Anemia has its main distribution in tropical America, with a few species in Africa and one in southern India. Mohria is confined to southern and eastern Africa and the Mascarene Islands.
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