*Centaurea ×moncktonii C.E. Britton. Meadow Knapweed. Phen: Jul-Oct. Hab: Roadsides, disturbed areas. Dist: Native of Europe. Poindexter, Weakley, & Denslow (2011) report its naturalization in Alleghany Co. NC.
Origin/Endemic status: Europe
Synonymy: = FNA19, K3, K4, Mi, NE; = Centaurea ×pratensis Thuill. – C, illegitimate name; = Centaurea jacea × nigra – NY; = Centaurea monctonii – Il, orthographic variant; = n/a – RAB; ? Centaurea debeauxii Godr. & Gren. ssp. thuillieri Dostál – Va; ? Centaurea nigra L. var. radiata DC. – F
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