Centaurea stoebe
L.
ssp. micranthos
(Gugler) Hayek
Spotted knapweed
Centaurea stoebe ssp. micranthos is a perennial herb that is not native to California.
New name: Centaurea stoebe ssp. australis
Cal-IPC rating: high
Bloom Period
one or more occurrenceswithin a 7.5-minute quadrangle
The blue points on the map indicate observations in Calflora.
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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."
