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Plant Database

Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

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Cirsium calcareum

Cirsium calcareum (M.E. Jones) Woot. & Standl.

Cainville Thistle, Four Corners Thistle

Asteraceae (Aster Family)

Synonym(s): Carduus pulchellus, Carduus truncatus, Cirsium bipinnatum, Cirsium calcareum var. bipinnatum, Cirsium calcareum var. pulchellum, Cirsium pulchellum, Cirsium pulchellum ssp. bipinnatum, Cirsium pulchellum var. glabrescens, Cnicus calcareus

USDA Symbol: CICA10

USDA Native Status: L48 (N)


From the Image Gallery

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Plant Characteristics

Duration: Perennial , Biennial
Habit: Herb
Size Notes: Up to about 5 feet tall.
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.

Bloom Information

Bloom Color: Red , Purple
Bloom Time: May , Jun , Jul , Aug , Sep , Oct
Bloom Notes: No ray florets present, only disc florets.



Web Reference

Webref 3 - Flora of North America (2014) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.

Additional resources

USDA: Find Cirsium calcareum in USDA Plants
FNA: Find Cirsium calcareum in the Flora of North America (if available)
Google: Search Google for Cirsium calcareum


Record Modified: 2018-12-11
Research By: CBR

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