Pityrogramma calomelanos

Thesaurus

Noun

1.

Pityrogramma calomelanos - tropical American fern having fronds with white undersidessilver fernfern - any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by sporesgenus Pityrogramma, Pityrogramma - terrestrial tropical ferns having fronds with powdery yellowish or white undersides; sometimes placed in family Polypodiaceae or Adiantaceae