Plantaginaceae

Roadside toadflax

Linaria aeruginea (Gouan) Cav.

Family: Plantaginaceae
Genus: Linaria

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Roadside toadflax (Linaria aeruginea) — FlowerPhoto: José Luis Camaño, CC0, from iNaturalist

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Common names

By language (1)

English: Roadside toadflax

Synonyms

Antirrhinum aerugineum Gouan
Linaria supina subsp. aeruginea (Gouan) Malag.
Linaria supina subsp. aeruginea (Gouan) O.Bolòs & Vigo
Linaria supina var. aeruginea (Gouan) O.Bolòs & Vigo
Linaria tristis prol. aeruginea (Gouan) Samp.

Flowers

In flower: April to June (from 109 flowering iNaturalist observations worldwide)

Characteristics

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

Photos

FlowerPhoto: José Luis Camaño, CC0, from iNaturalist
FlowerPhoto: Mikel Etxeberria Okariz, CC BY 4.0, from iNaturalist
FlowerPhoto: Daniel Heras González, CC BY 4.0, from iNaturalist
FlowerPhoto: Ana Garcia, CC BY 4.0, from iNaturalist
Photo: Ghislain118, CC BY-SA 3.0, from Wikimedia Commons
Photo: zebedeugalinha, CC BY 4.0, from iNaturalist
Photo: zebedeugalinha, CC BY 4.0, from iNaturalist
Photo: frangp, CC BY 4.0, from iNaturalist
Photo: zebedeugalinha, CC BY 4.0, from iNaturalist
Photo: zebedeugalinha, CC BY 4.0, from iNaturalist
Photo: zebedeugalinha, CC BY 4.0, from iNaturalist
Photo: zebedeugalinha, CC BY 4.0, from iNaturalist

More in Linaria

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.