Rudbeckia hirta L. - Black-eyed Susan


 

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Rudbeckia hirta - (image 1 of 5)

 

Taxonomy

Family: Asteraceae

Habitat

Prairies. Degraded prairies and pastures. Sandy oak savanna

Associates

 

 Distribution

Widespread

Morphology

Coarsely hairy, annual to perennial herb. Leaves simple; lower leaves lanceolate to elliptic on long petioles; other leaves mostly sessile. Disk dark purple to brown; rays 8-21, yellow to orange and sometimes purplish at the base; pappus absent.

Notes

Flowers late May to late October

Wetland indicator: Facultative Upland

A popular garden plant for dry, sunny areas.

Bibliography

Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Ed.

The New York Botanical Garden. Bronx, NY

 

Swink, F. and G. Wilhelm. 1994. Plants of the Chicago Region.
Indiana Academy of Science. The Morton Arboretum. Lisle, Illinois.
 


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 Michael Hough 2005