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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Thank you.

  Xanthium spinosum L. image
Photographer: PNW Weed Management Handbook           

(c)Barry A. Rice/The Nature Conservancy

(c)John M. Randall/The Nature Conservancy

(c)John M. Randall/The Nature Conservancy

from USDA Plants Website

Kurt Stüber

Kurt Stüber
Family Asteraceae
Xanthium spinosum L.
spiny cocklebur
Xanthium: from a Greek word meaning "yellow"
spinosum: spiny
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Introduced - adventive
Plant: erect, annual, 1'-4' tall forb with rough stems
Flower: head green; inflorescence of 1 to a few heads in leaf axils; blooms July-Oct.
Fruit:thick dry seeds, clustered in a 1/3" cylindrical bur with thin hooked prickles
Leaf:lance-like, tapering to base, silvery beneath, with 1/3" - 3/4" yellow spine in the axils
Habitat: disturbed sites

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

Flora of North America (off site)
There are no synonyms for this taxon.

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