*Centaurea Linnaeus. Star-thistle, Knapweed.
Key to Centaurea
A genus of about 500 species, herbs, native of Eurasia and n. Africa. Cyanus is better separated at the generic level (Greuter 2003).
Ref: Boršić et al. (2011); Cronquist (1980); Greuter (2003b); Greuter et al. (2000); Keil & Ochsmann (2006) In Flora of North America Editorial Committee (2006a). Show full citations.
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