| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Polemoniaceae | Phlox divaricata var. divaricata | Eastern Blue Phlox | Moist deciduous forests in circumneutral soils. | VT and QC west to MI, south to e. NC, GA, SC, GA, c. KY, and w. IN and extreme e. IL. |  |
| Polemoniaceae | Phlox divaricata var. laphamii | Western Blue Phlox | Rich, moist soils of forests and open woodlands. | W. GA, c. TN, wc. KY, w. IN, WI, MN, and se. SD south to FL Panhandle, s. AL, s. MS, s. LA, and se. TX. |  |