Etymology: Rudbeckia: named after the Swedish father and son who were professors of botany and predecessors of Linnaeus, O.J. Rudbeck (1630-1702) and O.O. Rudbeck (1660-1740)
Plants: erect, perennial, 2'-10' tall forb; stems entirely smooth
Leaves: large, stalked, lower leaves deeply pinnately-divided
Flowers: head 1 1/4" - 2 1/4" wide, disk yellow to gray domes 1/3" - 3/4" wide; 6-16 drooping, yellow rays 1"- 2 1/3" long, bracts (phyllaries) with whitish hairs near the tips; inflorescence with several to many heads in branched clusters; blooms July-Sept.
Fruits: dry seed with no fluffy pappus
Habitat: full to partial sun; moist; woods, forests, shores, streambanks; in sandy, loamy soil
Hazardous: Careful, this plant is hazardous!
Conservation Status: Native
Flora of North America: Flora of North America Floristic Rating: Coefficient of Conservatism = 6, Wetland Indicator = FACW+ 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 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"