Houstonia subviscosa, the nodding bluet, is a plant species in the Rubiaceae. It is native to Texas.Gray, Asa. 1859. Proceedings of the American Academy of Arts and Sciences 4: 314. Houstonia subviscosaGray, Asa. 1853. Smithsonian Contributions to Knowledge 5(6): 68, Oldenlandia subviscosa Shinners, Lloyd Herbert. 1949. Field & Laboratory 17(4): 169, Hedyotis subviscosaKew World Checklist of Selected Plant FamiliesBiota of North America Program
References
External links Lady Bird Johnson Wildflower Center, University of Texas at Austin Digital Flora, University of Texas Gardening Europe