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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  Centaurea cyanus L. image
Photographer: Emmet J. Judziewicz           

Botancial Illustration

Botancial Illustration

Kurt Stüber

Mark A. Wetter
Family Asteraceae
Centaurea cyanus L.
bachelor's-button, bluebottle, cornflower
Centaurea: ancient Greek plant-name, poetically associated with Chiron, the Centaur, but without wholly satisfactory explanation
cyanus: dark-blue
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Introduced - escaped
Plant: erect, annual, 8"-48" tall forb covered with whitish hairs when young
Flower: head 1/2"-1" wide with blue to purple disk flowers, bracts (phyllaries) lined with darkish fringed "eyelashes" near the tip; inflorescence a solitary head at the ends of the many branches
Leaf:usually undivided, linear, less than 1/3" wide, larger ones possibly with a few lobes
Habitat: disturbed sites

More Information Natural Communities Herbarium Specimens
All Centaurea list Google- Images or Text

Flora of North America (off site)
Leucacantha cyanus (L.) Nieuwl. & Lunell

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