Rudbeckia triloba thin-leaved coneflower Asteraceae RUTR; R;

 

Rudbeckia triloba.Charles Peirce.Herbarium University of Michigan.www.michiganflora.net

Rudbeckia triloba.Charles Peirce.Herbarium University of Michigan.www.michiganflora.net (Accessed 4/2014).

Rudbeckia triloba is a short-lived perennial or biennial herb, 50 cm to 1.5 m tall. 

Leaves alternate, thin, basal ones egg-shaped, long-stalked, larger stem leaves 3-lobed. 

Flowerin heads, rays yellow to orange, 6-13, 1-2 cm long, disk dark purple to brown, domed, 0.8-1.5 cm wide, basal bracts of head hairless, bristle-tipped; July-Oct. 

Fruit a one-seeded dry achene with a tiny crown. 

Wetland status: FACU. 

Frequency in NYC: Very infrequent. 

Origin: Native. 

Habitat: Moist open woods, thickets.