United States, Texas, Matagorda, A foot above Mad Island Lake's eastern shoreline, ca. 0.4 airmiles ENE of HQ of Mad Island Marsh Preserve (TNC). Palacios NE Quadrangle.
28.64664 -96.09536
Rare in transitional coastal prairie on tight sandy loam on level terrain underlain by Beaumont Formation. Associates include Paspalum plicatulum, Schizachyrium scoparium, and Spartina spartinae.