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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)
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Plant Characteristics
Duration: Perennial , BiennialHabit: 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 , PurpleBloom Time: May , Jun , Jul , Aug , Sep , Oct
Bloom Notes: No ray florets present, only disc florets.
Distribution
USA: CO , NM , UTWeb 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 PlantsFNA: Find Cirsium calcareum in the Flora of North America (if available)
Google: Search Google for Cirsium calcareum
Metadata
Record Modified: 2018-12-11Research By: CBR