Robert W. Freckmann Herbarium


Because of technology changes and personnel changes at UWSP and the Wisconsin State Herbarium, the database of plant species housed at this site was merged with the database from the OLD WisFlora website to create a new Flora of Wisconsin website at Currently we are encouraging all Wisplant viewers to begin using the Flora of Wisconsin website as soon as possible. Wisplants will remain operational through July 13th. After that date, all traffic to Wisplants will be redirected to the Flora of Wisconsin website.

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Search Results:     Genus: Centaurea  

List for printing without synonyms and photos.
Checklist from Wisconsin State Herbarium
Click on taxon for details including: Photos ( * ), Distribution Maps ( + ), Ethnobotany and Google Search.
      Family Asteraceae (click for list of genera only)  
            Centaurea L. *
              knapweed, star-thistle (DISTRIBUTION MAP GALLERY of SPECIES)
            Centaurea americana Nutt. * +
              American knapweed, American star-thistle, basket-flower
Image of Centaurea americana Nutt.
            Centaurea biebersteinii DC. * +
              spotted knapweed
                 Acosta maculosa auct. non Holub
                 Centaurea maculosa auct. non Lam.
Image of Centaurea biebersteinii DC.
            Centaurea cyanus L. * +
              bachelor's-button, bluebottle, cornflower
                 Leucacantha cyanus (L.) Nieuwl. & Lunell
Image of Centaurea cyanus L.
            Centaurea debeauxii Gren. & Godr. subsp. thuillieri DostŠl * +
              meadow knapweed
Image of Centaurea debeauxii Gren. & Godr. subsp. thuillieri DostŠl
            Centaurea diffusa Lam. * +
              spreading knapweed, tumble knapweed, white knapweed
                 Acosta diffusa (Lam.) SojŠk
Image of Centaurea diffusa Lam.
            Centaurea jacea L. * +
              brown knapweed, brown-ray knapweed
Image of Centaurea jacea L.
            Centaurea macrocephala Muss.Puschk. ex Willd. * +
              big-head knapweed
Image of Centaurea macrocephala Muss.Puschk. ex Willd.
            Centaurea melitensis L. * +
              Maltese star-thistle
Image of Centaurea melitensis L.
            Centaurea montana L. * +
              mountain-bluet, mountain cornflower
Image of Centaurea montana L.
            Centaurea nigra L. * +
              black knapweed, lesser knapweed
                 Centaurea nigra L. var. radiata DC.
Image of Centaurea nigra L.
            Centaurea nigrescens Willd. * +
              Tyrol knapweed, Vochin knapweed
                 Centaurea dubia Suter subsp. vochinensis (Bernh.ex Rchb.) Hayek
                 Centaurea vochinensis Bernh. ex Rchb.
Image of Centaurea nigrescens Willd.
            Centaurea repens L. * +
              Russian knapweed
                 Acroptilon repens (L.) DC.
                 Centaurea picris Pall. ex Willd.
Image of Centaurea repens L.
            Centaurea scabiosa L. * +
              greater knapweed, hard-heads
Image of Centaurea scabiosa L.
            Centaurea solstitialis L. * +
              St. Barnaby's thistle, yellow star-thistle
Image of Centaurea solstitialis L.

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