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.

Please direct any comments to

Thank you.

  Rheum rhabarbarum L. image
Photographer: Michael Clayton           

Botanical Illustration

Emmet J. Judziewicz

Michael Clayton

Matthew L. Wagner

Matthew L. Wagner

Robert W. Freckmann

Kurt Stüber

Kurt Stüber
Family Polygonaceae
Rheum rhabarbarum L.
garden rhubarb, pie plant
Rheum: Greek rheon or rha for "roots and rhizomes" imported from Iran
rhabarbarum: literally the rhubarb of foreigners, Rha for old name of River Volta along which R. officinale was brought from China
Hazardous hazard symbol- click for definition
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Introduced - escaped
Plant: perennial forb

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

Flora of North America (off site)
Rheum rhaponticum auct. non L.

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