| pityrogramma | (n) terrestrial tropical ferns having fronds with powdery yellowish or white undersides; sometimes placed in family Polypodiaceae or Adiantaceae, Syn. genus Pityrogramma |
| golden fern | (n) tropical American fern having fronds with light golden undersides, Syn. Pityrogramma calomelanos aureoflava |
| gold fern | (n) fern of West Indies and South America having fronds with bright golden-yellow undersides, Syn. Pityrogramma chrysophylla |
| silver fern | (n) tropical American fern having fronds with white undersides, Syn. Pityrogramma calomelanos |
| silver fern | (n) fern of southern tropical Africa having fronds with white undersides, Syn. Pityrogramma argentea |
| pityrogramma | (n) terrestrial tropical ferns having fronds with powdery yellowish or white undersides; sometimes placed in family Polypodiaceae or Adiantaceae, Syn. genus Pityrogramma |
| golden fern | (n) tropical American fern having fronds with light golden undersides, Syn. Pityrogramma calomelanos aureoflava |
| gold fern | (n) fern of West Indies and South America having fronds with bright golden-yellow undersides, Syn. Pityrogramma chrysophylla |
| silver fern | (n) tropical American fern having fronds with white undersides, Syn. Pityrogramma calomelanos |
| silver fern | (n) fern of southern tropical Africa having fronds with white undersides, Syn. Pityrogramma argentea |