Centaurea virgata ssp. squarrosa Calflora

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Taxon Report

Centaurea virgata Lam. ssp. squarrosa (Boiss.) Gugler.

Squarrose knapweed

2013 Gerald Carr

Centaurea virgata ssp. squarrosa is a perennial herb that is not native to California.

Cal-IPC rating: moderate


	Plant Range Observation Search (106 records) Plant Characteristics one or more occurrences within a 7.5-minute quadrangle

Bloom Period

Photos on Calflora


Parent:	Centaurea virgata
Genus:	Centaurea
Family:	Asteraceae
Category:	angiosperm
PLANTS group:	Dicot
Jepson eFlora section: eudicot

Habitat: disturbed

Communities: weed, characteristic of disturbed places

Name Status:
Accepted by JEF + PLANTS

Alternate Names:


JEF + PLANTS	Centaurea squarrosa
PLANTS	Centaurea triumfettii
PLANTS	Centaurea variegata
PLANTS	Centaurea virgata var. squarrosa

Information about Centaurea virgata ssp. squarrosa from other sources


Jepson eFlora USDA PLANTS Profile (CEVIS2) Photos on Calflora Photos on CalPhotos Google Images Photos on iNaturalist	International Plants Names Index Search efloras.org (Flora of North America) BONAP Distribution Map Cal-IPC Profile rating: moderate Consortium of California Herbaria 2	Add an Observation Location Suitability Distribution by County
[Wikipedia] Origins: Centaurea virgata is a species of Centaurea. It is native to Western Asia. The subspecies C. virgata subsp. squarrosa is known as squarrose knapweed. (contributed by Jessica Johnston) [NPS] Introduction: Squarrose knapweed (Centaurea virgata ssp. squarrosa) is present in Utah, Nevada, California, Oregon, Wisconsin, and Michigan. How it was introduced to North America is unknown. (contributed by Jessica Johnston) photos / record / common / links po85866:!po85866:!po85866:!

Suggested Citation

Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2023. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/ (Accessed: 12/09/2023).