Ruellia humilis Nutt. - Wild Petunia


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Ruellia humilis - (image 1 of 7)



Family: Acanthaceae


Dry open ground. Hill prairies, sandy ground.




PA, west through MI, WI, MN, NE, south FL to TX.


Perennial, more or less hairy herb. Leaves simple, opposite, sessile or nearly so. Flowers sessile or nearly so, in cymose clusters from axils of upper leaves; corolla lilac-purple, funnelform, 5-lobed; stamens 4; calyx lobes narrow.


Flowers early June to late August

Wetland indicator: Facultative upland-

A good garden plant that looks nice with low prairie grass like prairie dropseed.


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 (
National Plant Data Center, Baton Rouge, LA 70874-4490 USA.



 Michael Hough 2005