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DescriptionTerrestrial or lithophytic ferns. Rhizome creeping with tufted or spaced fronds; rhizome-scales not peltate and grading into hairs. Stipe not articulated. Fronds 1-pinnate; pinnae symmetrical or dimidiate, glabrous; veins free or less often, anastomosing. Sori marginal or submarginal, linear or oblong. Indusium opening outwards towards the margin.