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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  Xanthium strumarium L. var. canadense (Mill.) Torr. & A.Gray image
Photographer: from USDA Plants website           

Botancial Illustration
Family Asteraceae
Xanthium strumarium L. var. canadense (Mill.) Torr. & A.Gray
common cocklebur, rough cocklebur
Xanthium: from a Greek word meaning "yellow"
strumarium: of or pertaining to tumors or ulcers; rough
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: annual forb

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

Flora of North America (off site)
Xanthium acerosum Greene
Xanthium californicum Greene
Xanthium californicum Greene var. rotundifolium Widder
Xanthium campestre Greene
Xanthium canadense Mill.
Xanthium cavanillesii Schouw
Xanthium cenchroides Millsp. & Sherff
Xanthium commune Britton
Xanthium echinatum Murray
Xanthium glanduliferum Greene
Xanthium italicum Moretti
Xanthium macounii Britton
Xanthium oligacanthum Piper
Xanthium oviforme Wallr.
Xanthium pensylvanicum Wallr.
Xanthium saccharatum Wallr.
Xanthium speciosum Kearney
Xanthium strumarium L. subsp. italicum (Moretti) D.Löve
Xanthium strumarium L. var. oviforme (Wallr.) M.Peck
Xanthium strumarium L. var. pensylvanicum (Wallr.) M.Peck
Xanthium varians Greene

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