Pteridaceae

Silverback fern

Pentagramma viscosa Schuettp. & Windham

Family: Pteridaceae
Genus: Pentagramma

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Silverback fern: Photo of Pentagramma triangularis var. viscosa at the Regional Parks Botanic Garden , Berkeley, California — Photo: Stan Shebs, CC BY-SA 3.0, from Wikimedia Commons

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Common names

By language (1)

English: Silverback fern

Synonyms

Ceropteris viscosa (D.C.Eaton) Underw.
Gymnogramma triangularis var. viscosa D.C.Eaton
Gymnogramma viscosa Nutt. ex D.C.Eaton
Hemionitis viscosa (Schuettp. & Windham) Christenh.
Pentagramma triangularis subsp. viscosa (D.C.Eaton) Yatsk., Windham & E.Wollenw.
Pentagramma triangularis subsp. viscosa (Nutt. ex D.C.Eaton) Yatsk., Windham & Wollenw.
Pentagramma triangularis var. viscosa (D.C.Eaton) Tiehm
Pityrogramma triangularis var. viscosa (D.C.Eaton) Weath.
Pityrogramma viscosa (D.C.Eaton) Maxon

Photos

Photo: Stan Shebs, CC BY-SA 3.0, from Wikimedia Commons
Photo: Stan Shebs, CC BY-SA 3.0, from Wikimedia Commons
Photo: Stan Shebs, CC BY-SA 3.0, from Wikimedia Commons
Photo: John Rusk from Berkeley, CA, United States of America, CC BY 2.0, from Wikimedia Commons

More in Pentagramma

Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0). About our plant data.