[5] The species name breviligulata derives from the Latin brevis ("short") and ligula ("tongue"),[6] which refers to a feature of grass leaves called the ligule.

The long narrow leaves can roll or fold, and the rough upper leaf surface, which contains the gas exchange openings (stomata), can orient itself away from the wind.

One reason for this that has been extensively studied by Wim van der Putten and his colleagues is based on the susceptibility of Ammophila species to soil pathogens such as nematodes.

While the details are complex, the result is that beachgrass is largely limited to the foredunes that it builds, which are immediately adjacent to the water's edge and where sand is removed and redeposited fairly frequently.

Around the Great Lakes, it is limited to active dune habitats along the shores, and it is listed a threatened species in Minnesota where it reaches its most westerly natural range around Duluth.

Similarly, buildings and roads that were constructed under the presumption of continuing protection by the tall A. arenaria foredunes may now be threatened by shifting sand and by increased exposure to wind and water in storms.