1890 .] 
151 
[Up ham. 
and is highly esteemed for hay ; less common in Manitoba ; whitish 
and glaucous, not abundant, among the sand dunes of the Sheyenne 
delta of the glacial Lake Agassiz. 
Andropogon scoparius, Michx., abundant, occupying drier land 
than the last. 
Chrysopogon nutans, Benth., common or frequent in the Dako- 
tas, less so farther north; much cut for hay, with Andropogon 
furcatus and Panicum virgatum. 
Phalaris arundinacea, L., abundant in marshes. 
Hierochloe borealis, R. & S., very common on moist ground and 
along rivers and lakes throughout this northern prairie region. 
Stipa spartea, Trin., deservedly named Porcupine Grass, but 
more commonly called “Wild Oats” in Minnesota and the Dakotas ; 
abundant on the dry prairie, especially in South Dakota. 
Stipa viridula, Trin., extending east, on sandy alluvial soil of 
bottomlands, to the Red river; also common westward on the gen- 
eral prairie. 
Muhlenbergia glomerata, Trin. (chiefly the var. ramosa, Vasey) , 
plentiful on moist land ; frequently persisting as a weed in wheat 
fields and other cultivated ground. 
Sporobolus cuspidatus, Torr., common on dry portions of the 
prairie in the Dakotas, Manitoba, and Assiniboia. 
Sporobolus heterolepis, Gray, also plentiful from Nebraska to 
northwestern Manitoba. 
Agrostis alba, L., var. vulgaris, Thurber, indigenous and com- 
mon on moist land, especially northward. 
Agrostis scabra, Willd., abundant along rivers, so that in late 
summer the wheel ruts of roads are often filled with its dead pan- 
icles, broken off and blown thither by the wind. 
Deyeuxia Canadensis, Hook. f. (Calamagrostis Canadensis, 
Beauv.), abundant on wet meadows bordering streams, especially 
in the forest region. 
Deyeuxia neglecta, Kunth (Calamagrostis stricta, Trin.), plenti- 
ful on similar ground throughout the prairie region west of Winni- 
peg. 
Ammophila longifolia, Benth. (Calamagrostis longifolia, Hook.) , 
which binds the sand dunes along the south shore of lake Michi- 
gan, is generally abundant on sandy ridges through all the prairie 
region from the Red river west to the Rocky Mountains. 
