United States, Texas, Matagorda, On Mad Island Marsh Preserve (see map for location).
More upland part of sacahuistal (Spartina spartinae-dom. grassl.), common grasses incl. Schizachyrium scoparium.
flowers
Sheet
Mad Island Marsh Preserve Herbarium (Matagorda Co. Texas), donated by the Nature Conservancy to the University of Texas Herbarium, 2011.; verbatim common name: Late-flowering thoroughwort