Violaceae

Early Blue (Hook) Violet

Viola adunca Sm.

Family: Violaceae
Genus: Viola

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Early Blue (Hook) Violet (Viola adunca) — FlowerPhoto: Tom Erler, CC0, from iNaturalist

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Common names

By language (4)

English: Early Blue (Hook) Violet, Early Blue Violet, Hookedspur violet, Hooked-spur violet
French: Violette à éperon crochu
Hebrew: ויולה אדונקה
Persian: بنفشه زودرس نیلی

Synonyms

Lophion aduncum (Sm.) Nieuwl. & Lunell
Lophion aduncum var. glabrum (Brainerd) Nieuwl. & Lunell
Viola adunca f. adunca
Viola adunca f. albiflora Vict. & J.Rousseau
Viola adunca f. glabra (Brainerd) G.N.Jones
Viola adunca subsp. adunca
Viola adunca subsp. ashtonae M.S.Baker
Viola adunca subsp. oxyceras (S.Watson) Piper
Viola adunca subsp. radicosa M.S.Baker
Viola adunca subsp. uncinulata (Greene) Applegate
Viola adunca var. adunca
Viola adunca var. cascadensis (M.S.Baker) C.L.Hitchc.
Viola adunca var. glabra Brainerd
Viola adunca var. longipes Rydb.
Viola adunca var. oxyceras (S.Watson) Jeps.
Viola adunca var. uncinulata (Greene) C.L.Hitchc.
Viola aduncoides Á.Löve & D.Löve
Viola bellidifolia subsp. valida M.S.Baker
Viola canina var. adunca (Sm.) A.Gray
Viola canina var. longipes (Nutt.) S.Watson
Viola canina var. oxyceras S.Watson
Viola canina var. puberula S.Watson
Viola cardaminefolia Greene
Viola cascadensis M.S.Baker
Viola clarkae A.Nelson
Viola compacta Greene
Viola cordulata Greene
Viola demissa Greene
Viola desertorum Greene
Viola drepanophora Greene
Viola fulcrata Greene
Viola huronensis Greene
Viola inamoena Greene
Viola longipes Nutt.
Viola mamillata Greene
Viola montanensis Rydb.
Viola odontophora Rydb.
Viola oreocallis Greene
Viola oreophila Greene
Viola oxyceras Greene

and 9 more.

Characteristics

Growth habit: Forb/herb
Lifespan: Perennial
In the US and Canada: Alaska: native, Canada: native, Lower 48 states: native

Photos

FlowerPhoto: Tom Erler, CC0, from iNaturalist
FlowerPhoto: Douglas Goldman, CC BY-SA 4.0, from iNaturalist
FlowerPhoto: Rostyslav Yurechko, CC BY 4.0, from iNaturalist
Photo: Thegreenj, CC BY-SA 3.0, from Wikimedia Commons

More in Viola

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.