Scales of the rhizome and axes clathrate. Indusia single, absent in Pleurosorus. Aspleniaceae
Indusia present. Lamina glabrous or scaly Asplenium
Sori mostly marginal, 1 to each incurved lobule of a pinna, affixed to the central veinlet of the lobule but with a prominent indusium projecting towards the upper margin of the lobule, so as to make the sorus appear marginal
Most of the sori remote from the margin of the lamina