Beach Grass (Calamagrostis arenaria or Ammophila arundinacea), also known as Seasand Reed and Mat Grass, is found almost exclusively on the first line of coastal sand dunes; their extensive systems of creeping underground stems or rhizomes allow them to thrive under conditions of shifting sands and high winds. It grows from two to three feet high with stout roots running from twenty or thirty feet long. The leaves are wide, rather short and of a sea-green color.
Flint, Charles L. Grasses and Forage Plants (Boston, MA: William F. Gill & Company, 1874)
Courtesy the private collection of Roy Winkelman