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Family: acanthaceae
Common name(s): wild petunia
Hardiness ratings: USDA zone 5 - 8 
General resources
Links for Ruellia strepens
- Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 5-8)
 (2 photos)
- Garden.org - Community-assembled plant profile (7 photos)
- Illinois Wildflowers - Informative illustrated page with description and cultivation details, also covering range and faunal associations. (5 photos)
- Kansas Wildflowers & Grasses - Plant portrait with botanical details and description (8 photos)
- Lady Bird Johnson Wildflower Center - Plant description and characteristics with notes on distribution, culture, and propagation. (5 photos)
- Missouri Botanical Garden - Plantfinder page for one of the plants growing at the garden, with usually one or more photos, horticultural information, and noteworthy characteristics. (zone 5-8) (1 photo)
- Missouri Plants - Description and photographs of botanical features, with notes about habitat and native status. (9 photos)
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