(= Centaurea jacea × Centaurea nigra or Centaurea jacea × nigrescens)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Idaho and Montana; also in eastern North America.
Habitat: Roadsides, fields, ditches, meadows, wastelots, and other disturbed open areas at low to middle elevations.
Flowers: June-September
Origin: Introduced from Europe
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Bees, flies, beetles, wasps
[none provided]
Publication: Mitt. Bayer. Bot. Ges. xxxiv. 425, ex Bot. Centralbl.xcviii. 604. 1905.
Centaurea ×moncktonii C.E. Britton [FNA19]
Centaurea nigra L. × Centaurea jacea L.
Centaurea pratensis Thuill., superfluous renaming (illegitimate) [HC]
PNW Herbaria: Specimen records of Centaurea ×gerstlaueri in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Centaurea ×gerstlaueri checklist entry
OregonFlora: Centaurea ×gerstlaueri information
E-Flora BC: Centaurea ×gerstlaueri atlas page
CalPhotos: Centaurea ×gerstlaueri photos
