Phlox glabriflora
{{Short description|Species of flowering plant}}
{{Speciesbox
|genus = Phlox
|species = glabriflora
|authority = (Brand) Whitehouse
}}
Phlox glabriflora is an annual species of Phlox found in southern Texas. It is commonly called Rio Grande phlox. Whitehouse, Eula. "Notes on Texas Phloxes." Bulletin of the Torrey Botanical Club 62, no. 7 (1935): 381-386.