Coefficient of Conservatism:
Coefficient of Wetness:
A. A. Reznicek
Agropyron dasystachyum of Michigan Flora.
Restricted to sandy shores and dunes of the Great Lakes; frequent especially on the northern shores of Lakes Michigan and Huron. Known from Lake Superior only from two old Farwell collections (1890 and 1895), but there do not seem to be any reasons to reject these. Though the collections lacked good locality data, they are apparently from Eagle Harbor, based on other specimens Farwell collected on the same days with similar habitat wording.
A conspicuous blue-green glaucous grass. The lemmas are usually nearly or quite awnless, although some plants from all three of the Great Lakes on which it occurs have prominently awned lemmas. Our plants from the sandy shores of the Great Lakes are a disjunct population constituting the endemic subsp. psammophilus (Gillett & Senn) Á. Löve, which has more villous lemmas, more glaucous foliage and less attenuate glumes than plants from western North America.