genus Onychium

Thesaurus

Noun

1.genus Onychium - small terrestrial ferns of Old World tropics and subtropics: clawed ferns; sometimes placed in family CryptogrammataceaeOnychiumfern genus - genera of ferns and fern alliesfamily Pteridaceae, Pteridaceae - one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems; Pteridaceae is itself in turn sometimes further subdivided