| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Asteraceae | Rudbeckia triloba var. beadlei | Chauncey's Coneflower | Seepy mafic or limestone cliffs. | A Southern Appalachian endemic: sw. VA and KY south to w. NC and e. TN (allegedly also scattered in IL [Mohlenbrock 2014]). |  |
| Asteraceae | Rudbeckia triloba var. pinnatiloba | Pinnate-leaf Coneflower | Calcareous soils in wet savannas. | S. AL and Panhandle FL. | |
| Asteraceae | Rudbeckia triloba var. rupestris | Blue Ridge Three-lobed Coneflower | Moist forests and rock outcrops. | A Southern Appalachian endemic: KY south to NC and TN. | |
| Asteraceae | Rudbeckia triloba var. triloba | Common Three-lobed Coneflower | Moist forests and rock outcrops; locally common in black belt and Jackson prairies; very tolerant of disturbance and can be found in most mesic prairie soil sites, scattered elsewhere in disturbed areas. | VT, ON, MN, and NE south to GA and TX; westward in CO and UT (presumably as introductions). |  |
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