Brassicaceae

Hare's ear mustard

Conringia orientalis (L.) C.Presl

Family: Brassicaceae
Genus: Conringia

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Hare's ear mustard: Conringia orientalis is occasionally common in pasture settings along roadside in pastures but is most common in this area on some of the clay knolls and slopes — Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons

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Common names

By language (1)

English: Hare's ear mustard

Synonyms

Arabis orientalis (L.) Prantl
Brassica agrestis Steud.
Brassica orientalis L.
Brassica perfoliata (Crantz) Lam.
Brassica turrita Weigel
Cakile perfoliata L'Hér. ex DC.
Caulanthus annuus M.E.Jones
Cheiranthus orientalis (L.) Cav.
Cheiranthus syriacus DC.
Conringia perfoliata (Crantz) Link
Crucifera conringia E.H.L.Krause
Erysimum brassica Crantz
Erysimum campestre Scop.
Erysimum glaucum Moench
Erysimum orientale Mill.
Erysimum orientale (L.) Crantz
Erysimum perfoliatum Crantz
Gorinkia orientalis (L.) J.Presl & C.Presl
Hesperis quadrangula Boiss.
Hesperis syriaca (DC.) F.Dvořák
Sisymbrium tetragonum Trautv.

Characteristics

Growth habit: Forb/herb
Lifespan: Annual
In the US and Canada: Alaska: introduced, Canada: introduced, Lower 48 states: introduced, St. Pierre and Miquelon: introduced

Photos

Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Arkadiusz Nowak, Marcin Nobis, Sylwia Nowak, Agnieszka Nobis, Anna Wróbel, Sebas, CC BY 4.0, from Wikimedia Commons
Photo: Yeskendir Satekov, CC BY 4.0, from Wikimedia Commons
Photo: Vladimír Fuka, CC BY 4.0, from Wikimedia Commons

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Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0); popularity from Wikidata (2026-10-26, CC0 1.0). About our plant data.