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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  Eupatorium altissimum L. image
Photographer: John M. Schoeneker           

Richard Bauer

Emmet J. Judziewicz

Emmet J. Judziewicz

Christopher Noll

Janice Stiefel
Family Asteraceae
Eupatorium altissimum L.
upland boneset, tall boneset, tall eupatorium, tall thoroughwort
Eupatorium: from Greek name Mithridates Eupator, King of Pontus about 115BC who is said to have discovered an antidote to a commonly used poison in one of the species
altissimum: Latin for "especially tall"
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: erect, perennial, 3'- 6 1/2' tall forb with leafy, hairy stems
Flower: head with mostly 5 white, disk flowers; inflorescence of many heads in branched, flattish clusters; blooms July-Sept.
Fruit:dry seed on fluffy pappus
Leaf:many, opposite, hairy, 2"-5" long, lance-like, pointed at both ends and usually with a few, small teeth above the middle leaf drawing
Habitat: woods, thickets, savannas, glades

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

Flora of North America (off site)
Eupatorium saltuense Fernald

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