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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  Apocynum cannabinum L. image
Photographer: Gary Fewless           

Botanical Illustration
Family Apocynaceae
Apocynum cannabinum L.
hemp-dogbane, Indian hemp
Apocynum: from the Greek for "away from dog," i.e. noxious to dogs, in reference to its ancient use as a dog poison, hence dogbane
cannabinum: hemp-like
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, perennial, 2'-5' tall forb, clone-forming, milky juice; branched toward the top of the main stem
Flower: white to greenish, 5-parted, 1/8"-1/4" wide, cylindrical or urn-shaped, erect with erect or slightly spreading petals; inflorescence a branched cluster (cyme), main cyme terminal, others from the upper leaf axils; blooms June-Aug.
Fruit:paired, long, very narrow pod with seeds on silky hair
Leaf:opposite, short-stalked with sharp to rounded bases, erect or upward-pointing, very variable
Habitat: dry to moderate moisture; roadsides, prairies
Notes: tough, fibrous inner bark used for cordage by Native Americans; hybrids common

More Information Natural Communities Herbarium Specimens
All Apocynum list Ethnobotany Information Google- Images or Text
Apocynum album Greene var. hypericifolium A.Gray
Apocynum cannabinum L. var. angustifolium (Wooton) N.H.Holmgren
Apocynum cannabinum L. var. glaberrimum A.DC.
Apocynum cannabinum L. var. greeneanum (Bég. & Bél.) Woodson
Apocynum cannabinum L. var. nemorale (G.S.Mill.) Fernald
Apocynum cannabinum L. var. pubescens (Mitch. ex R.Br.) A.DC.
Apocynum cannabinum L. var. suksdorfii (Greene) Bég. & Bél.
Apocynum pubescens Mitch. ex R.Br.
Apocynum suksdorfii Greene
Apocynum suksdorfii Greene var. angustifolium (Wooton) Woodson

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