The distribution of this tiny flower — Limewater Brookweed, known scientifically as Samolus ebracteatus — is interesting. It can be found in every Texas coastal county save one, but after skipping a good bit of territory, it also appears in central Texas and the hill country before making its way west into a bit of New Mexico, where it’s sometimes known as Mojave Water Pimpernel.
The plant’s willingness to grow near springs and intermittent rivers in desert areas, as well as in the wetlands and salt marshes of coastal Texas, makes clear that Brookweed doesn’t require a brook in order to thrive.
Its flowers, measuring no more than a quarter-inch to a half-inch wide, appear on short stalks arrayed along a long wand. They mature from the base upward; as the season progresses, the plant continues to produce new blooms while fruits mature from the older flowers and release seeds.
The flowers of this perennial herb in the Primulaceae (the Primrose family) attract the Southern Carpenter Bee, hoverflies, and butterflies. When I found this example at the Kelly Hamby Nature Trail in Brazoria County, other Brookweeds were being visited by an assortment of Sulphurs.