Salicaceae

Alpine willow

Salix petrophila Rydb.

Family: Salicaceae
Genus: Salix

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Alpine willow (Salix petrophila) — FlowerPhoto: Anders Hastings, CC BY 4.0, from iNaturalist

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Common names

By language (1)

English: Alpine willow, Rocky Mountain willow

Synonyms

Salix anglorum var. antiplasta C.K.Schneid.
Salix arctica subsp. petraea (Andersson) Á.Löve, D.Löve & B.M.Kapoor
Salix arctica var. petraea Andersson
Salix arctica var. petrophila (Rydb.) Kelso
Salix brownii var. petraea Bebb
Salix petrophila var. caespitosa (P.B.Kenn.) C.K.Schneid.

Flowers

In flower: June to August (from 29 flowering iNaturalist observations worldwide)

Characteristics

Growth habit: Shrub
Lifespan: Perennial
In the US and Canada: Canada: native, Lower 48 states: native

Photos

FlowerPhoto: Anders Hastings, CC BY 4.0, from iNaturalist
FlowerPhoto: Anders Hastings, CC BY 4.0, from iNaturalist
FlowerPhoto: Matt Berger, CC BY 4.0, from iNaturalist
FlowerPhoto: Craig Martin, CC0, from iNaturalist
Photo: Patrick Alexander from Las Cruces, NM, CC0, from Wikimedia Commons
Photo: Matt Lavin, CC BY 4.0, from iNaturalist
Photo: Tim Messick, CC BY 4.0, from iNaturalist
Photo: Patrick Alexander from Las Cruces, NM, CC0, from Wikimedia Commons
Photo: Matt Berger, CC BY 4.0, from iNaturalist
Photo: Patrick Alexander from Las Cruces, NM, CC0, from Wikimedia Commons
Photo: My-Lan Le, CC BY 4.0, from iNaturalist
Photo: sheriff_woody_pct, CC BY 4.0, from Wikimedia Commons

More in Salix

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); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.