Hydrolea ovata Nutt. ex Choisy
| The genera of Hydrophyllaceae and Polemoniaceae in the southeastern United States K A Wilson (1960) Journal of the Arnold Arboretum 41: 197-212 | |
| The vascular flora of three wildlife refuges in Cameron Parish, Louisiana B E Dutton and R D Thomas (1990) Phytologia 68: 333-362 |