Etymology: Leonurus: from the Greek leon for "lion" and oura, "a tail," hence resembling a lion's tail
Plants: erect, perennial, 18"-60" tall aromatic forb; stems square, clustered
Leaves: opposite, often drooping, stalk as long as the blade, main leaves palmately divided and coarsely toothed
Flowers: pink to white, 5-parted, 1/3"-1/2" long, mostly stalkless; inflorescence small, whorled clusters from the leaf axils; blooms June-Aug.
Fruits: 1-seeded nutlet
Habitat: disturbed sites, often in rich soil
Hazardous: Careful, this plant is hazardous!
Conservation Status: Introduced - naturalized

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 USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc. 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 Purple Sage - Ethnobotanical Information: Detailed usage, preparation, and other helpful information Southwest School of Botanical Medicine: Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada"