pityrogramma
English Thesaurus
1. terrestrial tropical ferns having fronds with powdery yellowish or white undersides; sometimes placed in family Polypodiaceae or Adiantaceae (noun.plant)
| hypernym | : | fern genus, |
| definition | : | genera of ferns and fern allies (noun.plant) |
| member holonym | : | pityrogramma argentea, silver fern, |
| definition | : | fern of southern tropical Africa having fronds with white undersides (noun.plant) |
| member holonym | : | pityrogramma calomelanos, silver fern, |
| definition | : | tropical American fern having fronds with white undersides (noun.plant) |
| member holonym | : | golden fern, pityrogramma calomelanos aureoflava, |
| definition | : | tropical American fern having fronds with light golden undersides (noun.plant) |
| member holonym | : | gold fern, pityrogramma chrysophylla, |
| definition | : | fern of West Indies and South America having fronds with bright golden-yellow undersides (noun.plant) |
| member meronym | : | family pteridaceae, pteridaceae, |
| definition | : | 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 (noun.plant) |
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