Ratibida pinnata (Vent.) Barnhart - Yellow Coneflower


 

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Ratibida pinnata - (image 1 of 7)

 

Taxonomy

Family: Asteraceae

Habitat

Dry prairies, field, woods. Degraded prairies. Often on calcareous soil. 

Associates

 

 Distribution

VT and MA, south to FL (absent from DE, MD, and NC), west SD to LA. Extirpated from PA.

Morphology

Herbaceous, rhizomatous perennial with fibrous roots. Leaves alternate, pinnatifid; lower leaves on long petioles; upper leaves on short petioles or sessile. Flower heads usually several; disk dark brown, globular, a little longer than wide; rays bright yellow, longer than the disk, typically reflexed. Achenes smooth, lacking puppus.

Notes

Flowers early July to late October

Wetland indicator: Upland

Also called Gray-headed Coneflower. The last three images aren't the best but I find the way the warbler blends with the coneflowers fascinating.

References

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.

 

USDA, NRCS. 2002. The PLANTS Database, Version 3.5 (http://plants.usda.gov).
National Plant Data Center, Baton Rouge, LA 70874-4490 USA.


 


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 Michael Hough 2005