- endemic to sandy areas in South Texas, including South Texas Sand Sheet and Ingleside Barrier
- annual with square stems usually a foot tall or less
- leaves opposite, oblong or spoon-shaped, with only a few teeth on margins
- flowers in terminal racemes, pink-purple, bilaterally symmetrical
- blooms in early spring
- endemic to the Texas coastal plain
- grows in open areas on deep loose white sand
- similar to Brazoria truncata but with darker flowers in a more elongate open spike
