Common Name:
BEACH GRASS, MARRAM GRASS
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Coefficient of Conservatism:
10
Coefficient of Wetness:
5
Wetness Index:
UPL
Physiognomy:
Nt P-Grass
A. A. Reznicek
Common to abundant on the sandy shores and dunes of Lakes Michigan, Huron, and Superior. Collected inland only on the east shore of Douglas Lake, Cheboygan Co. (J. H. Ehlers 7277 in 1920, MICH). Observations on A. breviligulata at the Sleeping Bear Dunes, Leelanau Co., by F. C. Gates showed that the rhizomes may grow as much as 2.4 m in a single year as sand accumulates. In possessing both vertical and horizontal rhizomes, this plant is unusually well adapted for survival on sand dunes. ×Calammophila don-hensonii Reznicek & Judz. is a hybrid with Calamagrostis canadensis known from Lake Superior. See Delisle-Oldham, Oldham, & Catling (2008) for a morphological analysis of non-maritime Ammophila populations.