Houstonia parviflora, the few-flowered bluet or Greenman's bluet, is a plant species in the Rubiaceae, found only in south-central Texas.Greenman, Jesse More. 1897. Proceedings of the American Academy of Arts and Sciences 32(16): 284–285, Houstonia parvifloraFosberg, Francis Raymond. 1949. Field & Laboratory 17(4): 167, Hedyotis greenmaniiKew World Checklist of Selected Plant FamiliesBiota of North America Program
References
External links Gardening Europe, Houstonia parviflora Hedyotis greenmanii Lady Bird Johnson Wildflower Center, Native Plant Database