- prostrate annual with stems forming loose mats 3-5 inches wide
- leaves opposite, narrowly spatulate, the longest usually < 1 1/2 inches long
- flowers on short stalks from leaf axils
- corolla bright white, 4-lobed, ~ 3/8 inch wide
- endemic to South Texas
- known only from Zapata County
- found in loose sandy soils
Photo credit: Lee Elliott