Pityrogramma

Pityrogramma, the silverback ferns, or goldback ferns,^{[citation needed]} is a fern genus in the subfamily Pteridoideae of the family Pteridaceae.^[2]

Pityrogramma
Pityrogramma sulphurea
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Division:	Polypodiophyta
Class:	Polypodiopsida
Order:	Polypodiales
Family:	Pteridaceae
Subfamily:	Pteridoideae
Genus:	Pityrogramma Link[1]
Type species
Pityrogramma chrysophylla (Swartz) Link
Species
See text.
Synonyms
Calomelanos (Presl 1836) Lindl. Ceropteris Link Neurogramma Link ×Pityromeria Gómez Trismeria Fée 1852

Species

As of December 2019^[update], Plants of the World Online recognized the following species and hybrids:^[1]

Phylogeny of Pityrogramma [3][4]
section P. ebenea (von Linné) Proctor (Mountain silverback fern) P. austroamericana Domin P. sulphurea (Swartz) Maxon (Jamaican goldback fern) Cerogramme section P. trifoliata (von Linné) Tryon (Goldenrod Fern, threeleaf goldback fern) P. calomelanos (von Linné) Link (Dixie silverback fern) P. ochracea (Presl) Domin Calomelanos

Other species:

• P. aurantiaca (Hieron.) C.Chr.
• P. chrysoconia Maxon ex Domin
• P. chrysophylla Link (Island goldback fern)
• P. dealbata (C.Presl) Domin
• P. dukei Lellinger
• P. eggersii Maxon
• P. elongata (C.Chr.) Pic.Serm.
• P. euchrysa (Ekman ex Christensen) Ekman ex Testo
• P. ferruginea (Kunze) Maxon
• P. ×herzogii (Rosenst.) L.D.Gómez
• P. hirsuta Testo
• P. humbertii C.Chr.
• P. jamesonii (Baker) Domin
• P. lehmannii (Hieron.) R.M.Tryon
• P. ×mckenneyi W.H.Wagner
• P. opalescens Sundue
• P. pearcei Domin
• P. pulchella Domin
• P. rupicola Pic.Serm.
• P. schizophylla (Baker) Maxon
• P. triangulata Maxon
• P. ×watkinsii Testo
• P. williamsii Proctor

Gold fern (P. austroamericana)

Silver fern (P. calomelanos)