Baccus & Horton (1979) identify 13 species that occur in the low marshy areas of the heavily vegetated barrier flat at Padre Island National Seashore.
They identified Andropogon glomeratus and Spartina patens as dominants in the lowland subcommunity of the barrier flat community.
Mean species richness in the barrier flat community (both low and higher elevations) of Big Ball Hill region of Padre Island National Seashore was reported to be 20.
The specimen was collected in the barrier flat of PINS (TAC N699) and its range should be extended to northern Padre Island (Negrete et al.
Typical habitats found on the islands include coppice dunes, foredunes, barrier flats and tidal flats (Nelson et al.