Family: Cannabaceae
hemp, Indian hemp, marijuana
Richard Bauer
Emmet J. Judziewicz
Bell Museum
Etymology: Cannabis: ancient Greek name, of obscure etymology
Plants: erect, annual, 8"-40" or more tall forb
Leaves: stalked, palmately-divided with 5-7 leaflets, hairy, toothed
Flowers: green, 5-parted; inflorescence 6" branched clusters both terminal and from the leaf axils, male flowers loosely arranged, female more compact and fewer; blooms June-Oct.
Fruits: dry seed
Habitat: disturbed sites
Hazardous: Careful, this plant is hazardous!
Conservation Status: Introduced - naturalized
Plants: erect, annual, 8"-40" or more tall forb
Leaves: stalked, palmately-divided with 5-7 leaflets, hairy, toothed
Flowers: green, 5-parted; inflorescence 6" branched clusters both terminal and from the leaf axils, male flowers loosely arranged, female more compact and fewer; blooms June-Oct.
Fruits: dry seed
Habitat: disturbed sites
Hazardous: Careful, this plant is hazardous!
Conservation Status: Introduced - naturalized
Roadsides, railroad corridors, farmyards, pastures and fields, waste areas, vacant lots, gardens, rock outcrops, open bluffs and cliffs, streambanks, borrow pits and old quarries, borders of woods. An Asian species cultivated for hundreds of years as a fiber crop and for medicinal and recreational use. Hemp was grown in Wisconsin during WWII and many of our collections are surely escaped progeny of those plants.
Flora of North America: Flora of North America Floristic Rating: Wetland Indicator = FAC 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. USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc. USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc. Southwest School of Botanical Medicine: Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada" Illinois Wildflowers: Wonderful photographs; detailed descriptions; color and leaf arrangement key
Emmet J. Judziewicz
Robert R. Kowal
Botancial Illustration
Richard Bauer
Botancial Illustration
Botancial Illustration
Aaron Carlson
Christopher Noll
Merel R. Black
Kurt Stüber
