Asteraceae

Arizona thistle

Cirsium arizonicum (A.Gray) Petr.

Family: Asteraceae
Genus: Cirsium

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Common names

By language (3)

Chinese: 亚利桑那蓟
English: Arizona thistle
Spanish: Carduus arizonicus, Carduus bipinnatus, Carduus nidulus, Carduus rothrockii

Synonyms

Cirsium arizonicum var. arizonicum
Cirsium arizonicum var. nidulum (M.E.Jones) S.L.Welsh
Cirsium nidulum (M.E.Jones) Petr.
Cirsium nidulum Rydb.
Cnicus arizonicus A.Gray
Cnicus nidulus M.E.Jones

Characteristics

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

Photos

Photo: Benjamin Cody, CC BY-SA 3.0, from Wikimedia Commons
Photo: Jim Morefield from Nevada, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Damon Rath, CC BY-SA 4.0, from Pl@ntNet via GBIF
Photo: Jim Morefield from Nevada, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: JM Morton, CC BY-SA 4.0, from Pl@ntNet via GBIF
Photo: Jim Morefield from Nevada, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Lilly Miller, CC BY-SA 4.0, from Pl@ntNet via GBIF
Photo: Jim Morefield from Nevada, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Lilly Miller, CC BY-SA 4.0, from Pl@ntNet via GBIF
Photo: Paul Harrison, CC BY-SA 4.0, from Wikimedia Commons
Photo: Roxanne Cariadi-Kimbler, CC BY-SA 4.0, from Pl@ntNet via GBIF
Photo: Krzysztof Ziarnek, Kenraiz, CC BY-SA 4.0, from Wikimedia Commons

More in Cirsium

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.