Etymology: Dipsacus: from the Greek dipsa, "thirst," from the connate (joined or attached) leaf bases that in some ssp. hold water
Plants: erect, biennial, 2'-7' tall forb;
Flowers: white to purple, 4-parted, with irregular petals; inflorescence a dense, cylindrical cluster on a long, naked stalk, bracts not taller than the flower cluster; blooms July-Sept.
Habitat: moist; roadside, disturbed areas
Invasiveness: Restricted Invasive - Eradicate!
Conservation Status: Introduced - naturalized; ecologically invasive
WIS DNR-Bureau of Endangered Resources: Detailed information on Wisconsin invasive species including decription, habitats, control methods USDA Plants Database: Federal Distribution and detailed information including photos University of Wisconsin - Green Bay: Invasive Plants: Photos, descriptions, information Dan Tenaglia's The Missouri Flora: Fabulous photographs; detailed descriptions; color and leave arrangement key. Illinois Wildflowers: Wonderful photographs; detailed descriptions; color and leaf arrangement key