Argyrochosma dealbata

Argyrochosma dealbata
Argyrochosma dealbata growing in a rock crevice.

Apparently Secure (NatureServe)
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Division: Polypodiophyta
Class: Polypodiopsida
Order: Polypodiales
Family: Pteridaceae
Genus: Argyrochosma
Species:
A. dealbata
Binomial name
Argyrochosma dealbata
(Pursh) Windham
Synonyms
  • Cheilanthes dealbata Pursh
  • Cincinalis dealbata (Pursh) Fée
  • Gymnogramma dealbata (Pursh) Mett., nom. illeg. hom.
  • Hemionitis artax Christenh.
  • Notholaena dealbata (Pursh) Kunze
  • Notholaena nivea var. dealbata (Pursh) Davenp.
  • Notholaena pulchella Kunze
  • Pellaea dealbata (Pursh) Prantl

Argyrochosma dealbata, the powdery false cloak fern, is a small fern endemic to the central and southern United States. It grows on calcareous rocks, such as limestone. Its leaves are highly divided, with leaf segments joined by shiny, chestnut-brown axes, and their undersides are coated with white powder, giving the fern its name. First described as a species in 1814, it was transferred to the new genus Argyrochosma in 1987.

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