| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Solanaceae | Petunia ×atkinsiana | Garden Petunia | Disturbed areas, garden edges, common in cultivation, rare as a waif or persistent. | Native of Argentina. Individual plants may closely resemble either parent, but this taxon in our area is probably best and most conveniently considered as a variable hybrid taxon. | |
| Solanaceae | Petunia axillaris | White-flowered Petunia | Waste places, near plantings, along railroads and roads. | Native of South America. |  |
| Solanaceae | Petunia integrifolia | Violet-flowered Petunia | Waste places, near plantings, along railroads and roads. | Native of South America. |  |
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