[Rudbeckia bicolor Nutt., Rudbeckia hirta var. corymbifera L., Rudbeckia hirta var. lanceolata L., Rudbeckia hirta var. sericea L., Rudbeckia hirta var. serotina L., Rudbeckia lanceolata Bisch., Rudbeckia longipes T.V.Moore, Rudbeckia sericea T.V.Moore, Rudbeckia serotina Nutt., Rudbeckia serotina var. corymbifera Nutt., Rudbeckia serotina var. lanceolata Nutt., Rudbeckia serotina var. sericea Nutt.]
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