Papaveraceae

Southwestern pricklypoppy

Argemone pleiacantha Greene

Family: Papaveraceae
Genus: Argemone

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Southwestern pricklypoppy (Argemone pleiacantha) — FlowerPhoto: Daniel Atha, CC0, from iNaturalist

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Common names

By language (3)

Arabic: أرجمون كثير الأشواك
Chinese: 白花蓟罂粟, 白花薊罌粟
English: Southwestern pricklypoppy

Synonyms

Argemone platyceras var. horridissima Fedde
Argemone platyceras var. pleiacantha Fedde
Argemone platyceras var. stenoceras Fedde

Flowers

In flower: March to August (from 162 flowering iNaturalist observations worldwide)

Characteristics

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

Photos

FlowerPhoto: Daniel Atha, CC0, from iNaturalist
FlowerPhoto: Sue Carnahan, CC BY 4.0, from iNaturalist
FlowerPhoto: sprcrkwild, CC BY 4.0, from iNaturalist
FlowerPhoto: Sue Carnahan, CC BY 4.0, from iNaturalist
Photo: Petrified Forest Ranger, CC BY 2.0, from Wikimedia Commons
Photo: Marie Domokos, CC BY 4.0, from iNaturalist
Photo: paddy_28, CC BY-SA 4.0, from Pl@ntNet via GBIF
Photo: gailhampshire from Cradley, Malvern, U.K, CC BY 2.0, from Wikimedia Commons
Photo: mike85629, CC BY-SA 4.0, from Pl@ntNet via GBIF
Photo: Joshua Smith, CC0, from iNaturalist
Photo: gailhampshire from Cradley, Malvern, U.K, CC BY 2.0, from Wikimedia Commons
Photo: JM Morton, CC BY-SA 4.0, from Pl@ntNet via GBIF

More in Argemone

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.