| Noun | 1. | genus Rumohra - leatherleaf ferns: in some classifications included in genus Polystichum fern genus - genera of ferns and fern allies Athyriaceae, Dryopteridaceae, family Athyriaceae, family Dryopteridaceae - alternative names for one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems leatherleaf fern, Polystichum adiantiformis, Rumohra adiantiformis, ten-day fern, leather fern - widely distributed fern of tropical southern hemisphere having leathery pinnatifid fronds |