Rudbeckia triloba
Family: Asteraceae
brown-eyed Susan, three-lobed coneflower
Rudbeckia triloba image
Emmet J. Judziewicz  
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'-5' tall, usually somewhat hairy forb
Leaves: sharply toothed or 3-parted, lower leaves widely oval, long-stalked, the upper leaves narrow with short or no stalk
Flowers: head 1" -1 3/4" wide; disk purple/brown, domed to oval 1/3"-1/2" wide; 6-13 yellow to orange rays 1/3"-3/4" long, bracts (phyllaries) without whitish hairs; inflorescence of several to many heads in branched clusters; blooms July-Oct.
Fruits: dry seed with no fluffy pappus
Habitat: full to partial sun; wet to moderate moisture; disturbed sites, woods, prairies; in sandy, loamy soil
Conservation Status: Native