[Apocynum album var. hypericifolium Greene, more]
Etymology: 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
Plants: erect, perennial, 2'-5' tall forb, clone-forming, milky juice; branched toward the top of the main stem
Leaves: opposite, short-stalked with sharp to rounded bases, erect or upward-pointing, very variable
Flowers: 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.
Fruits: paired, long, very narrow pod with seeds on silky hair
Habitat: dry to moderate moisture; roadsides, prairies
Hazardous: Careful, this plant is hazardous!
Conservation Status: Native
Floristic Rating: Coefficient of Conservatism = 3, Wetland Indicator = FAC Atlas of the Wisconsin Prairie and Savanna Flora: by T.S. Cochrane & H.H. Iltis: habitat, distribution infomation / flowering and fruiting times USDA Plants Database: Federal Distribution and detailed information including photos Dan Tenaglia's The Missouri Flora: Fabulous photographs; detailed descriptions; color and leave arrangement key. David G. Smith's "Delaware Wilflowers": Beautiful photographs; descriptions Illinois Wildflowers: Wonderful photographs; detailed descriptions; color and leaf arrangement key Southwest School of Botanical Medicine: Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada"