Houstonia parviflora, the few-flowered bluet or Greenman's bluet, is a plant species in the Rubiaceae, found only in south-central Texas. References External links Gardening Europe, Houstonia parviflora Hedyotis greenmanii Lady Bird Johnson Wildflower Center, Native Plant Database parviflora Endemic flora of Texas Plants described in 1897 Flora without expected TNC conservation status