[Rudbeckia bicolor Nutt., more...]
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, biennial/perennial, 1'-3' tall, very hairy forb
Leaves: either entire or with fine teeth, lower leaves lance-like up to 1" wide and 5 times as long, the upper becoming more linear
Flowers: head 2"-3" wide; dark brown, domed disk 1/2"-3/4" wide; 8-21 yellow, 3/4"- 1 1/2" long rays, bracts (phyllaries) with coarse hairs; inflorescence with a long-stalked, solitary heads; blooms June-Oct.
Fruits: dry seed with no fluffy pappus
Habitat: full to partial sun; dry, moderate moisture to wet; prairies, meadows, roadsides; 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 = 4, Wetland Indicator = FACU 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"