Family: Lamiaceae
brittle-stem hemp-nettle, common hemp-nettle, hemp-nettle
Janice Stiefel
Janice Stiefel
Etymology: Galeopsis: Greek for "weasel" and "appearance," from likeness of corolla to head of a weasel
Plants: erect, annual, 6"-36" tall forb, aromatic, branched toward the top when mature; stems square, swollen at the leaf nodes, and with rough, coarse, spreading hairs; taprooted
Leaves: opposite, stalked, ovate, coarsely toothed
Flowers: pink to white often with 2 yellow or white spots, 5-parted, 3/4" long, irregularly tube-shaped;
inflorescence of several, dense, rounded whorls terminal and from the upper leaf axils; blooms June-Sept.
Fruits: 1-seeded nutlet
Habitat: disturbed sites
Invasiveness: Restricted Invasive - Eradicate!
Conservation Status: Introduced - naturalized; ecologically invasive
Plants: erect, annual, 6"-36" tall forb, aromatic, branched toward the top when mature; stems square, swollen at the leaf nodes, and with rough, coarse, spreading hairs; taprooted
Leaves: opposite, stalked, ovate, coarsely toothed
Flowers: pink to white often with 2 yellow or white spots, 5-parted, 3/4" long, irregularly tube-shaped;
inflorescence of several, dense, rounded whorls terminal and from the upper leaf axils; blooms June-Sept.Fruits: 1-seeded nutlet
Habitat: disturbed sites
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 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. Southwest School of Botanical Medicine: Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada"
Janice Stiefel
Kitty Kohout
Matthew L. Wagner
Matthew L. Wagner
Robert W. Freckmann
Robert Bierman
Emmet J. Judziewicz
Botanical Illustration
Botanical Illustration
Botanical Illustration
