Asteraceae

Clustered thistle

Cirsium brevistylum Cronquist

Family: Asteraceae
Genus: Cirsium

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Clustered thistle (Cirsium brevistylum) — FlowerPhoto: Ken-ichi Ueda, CC BY 4.0, from iNaturalist

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Common names

By language (1)

English: Clustered thistle

Flowers

In flower: April to June (from 263 flowering iNaturalist observations worldwide)

Characteristics

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

Photos

FlowerPhoto: Ken-ichi Ueda, CC BY 4.0, from iNaturalist
FlowerPhoto: Alex Heyman, CC0, from iNaturalist
FlowerPhoto: Irene, CC0, from iNaturalist
FlowerPhoto: elik03, CC BY 4.0, from iNaturalist
FlowerPhoto: Garth Harwood, CC BY 4.0, from iNaturalist
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: Jeffrey Lee (he/him/his), CC BY 4.0, from iNaturalist
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

More in Cirsium

Sources: classification 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.