Calflora
Taxon  Report   9791    
Centaurea stoebe  L.  ssp. micranthos  (Gugler) Hayek
Spotted knapweed
Centaurea stoebe ssp. micranthos, a dicot, is a perennial herb that is not native to California; it has been naturalized in the wild.
Cal-IPC rating: High
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Observation Search
(1833 records)
one or more occurrences
within a 7.5-minute quadrangle

Bloom Period
Family: ASTERACEAE  
Genus: Centaurea
Parent: Centaurea stoebe

Communities: escaped cultivar
Name Status:
Accepted by ICPN + PLANTS

 Alternate Names:
PLANTS: Acosta maculosa
PLANTS: Centaurea biebersteinii
ICPN + PLANTS: Centaurea maculosa
More information about  Centaurea stoebe ssp. micranthos
Search efloras.org (Flora of North America)

Photos on PlantID.net   /   Google Images

Consortium of California Herbaria 2

FEIS: DISTRIBUTION AND OCCURRENCE:  "Spotted knapweed is native to eastern Europe, though it now occurs in western and central Europe. It was introduced to North America, probably as a contaminant in alfalfa (Medicago sativa) seed and/or ship's ballast, in the late 1800s ... . In 1920, the distribution of spotted knapweed in North America was limited to the San Juan Islands, Washington."


Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2020. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: Oct 21, 2020).