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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  Iva xanthifolia Nutt. image
Photographer: Emmet J. Judziewicz           

Botancial Illustration

Botancial Illustration

Gary Fewless

Gary Fewless
Family Asteraceae
Iva xanthifolia Nutt.
bur-weed marsh-elder, giant sump-weed
Iva: a Latin derivation from the mint Ajuga iva, which has a similar aroma
xanthifolia: xanthos for "yellow;" folius for "leaves"
Hazardous hazard symbol- click for definition
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: erect, annual, 1 1/2'- 6' tall, unbranched, coarse forb; stems smooth toward the bottom
Flower: head green to cream, no rays, no bracts; inflorescence with many, mostly stalkless heads in 10" long, large, branched clusters; blooms Aug.-Oct.
Leaf:mostly opposite, upper might become alternate; long-stalked, very widely oval, doubly toothed, roughly hairy on the top, softly fuzzy and light green on the bottom
Habitat: moist; shores, disturbed sites

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

Flora of North America (off site)
Cyclachaena xanthifolia (Nutt.) Fresen.

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