CCC 
34 
South Dakota: Frankfort (Griffiths 48), Redfield (Griffiths 71), Brookings, Aurora 
County (Wilcox 21), Indian Creek (Wallace 32), Ree Heights (Griffiths 45). 
Dry, rather sandy soil, in prairies and along railroad grades. 
Sporobolus asperifolius Thurb. 
South Dakota: Aurora County, Indian Creek, Iroquois (Wilcox 67 
). 
Dry, sterile soil, abundant in the Bad Lands and on the ranges west of the Missouri. 
Sporobolus brevifolius (Nutt.) Seribn. (S. cuspidatus of the manuals.) 
North Dakota: Grand Forks (Brannon 48), Medora (Brannon 139), Minnewaukon 
Brannon 65), Dickinson, Oake 
South Dakota: Brookings (Wilcox 12), Redfield (Griffiths 70), Frankfort (Griffiths 
60), Huron (Griffiths 12), White River (Wallace 37), Indian Creek (Wallace 36), 
Aurora County (Wilcox 52, 53) 
Dry soil, throughout both the Dakotas. 
a 
Sporobolus cryptandrus (Torr.) Gray. 
North Dakota: Medora (Brannon 125), O 
South Dakota: Pierre (Griffiths 25, 32), 55 (Griffiths 91, 104), Aurora County 
(Wilcox 6). 
Dry, sandy soil. 
Sporobolus heterolepis Gray. 
North Dakota: Willow City (Brannon 77), Minot (Brannon 112), Dickinson (Bran- 
non 132). 
South Dakota: Brookings (Wilcox 10), Sioux Falls, Flandreau. 
In dry soil along the borders of swales and on hillsides 
Sporobolus vagineeflorus (Torr.) Vasey. 
South Dakota: Brookings, Sioux Falls, Aberdeen (Griffiths 94), Redfield (Griffiths 
65), Pierre (Griffiths 36), Wessington (Griffiths 42), Huron, Iroquois, Aurora 
County (Wileox 20). 
Muhlenbergia racemosa (Michx.) B. S. P. 
North Dakota: Girard Lake (Brannon 88), O 
South Dakota: Brookings, Sioux Falls, e (Griffiths 133), Redfield (Griffiths 
77), Huron (Griffiths p Pierre (Griffiths 28,35), Aurora County (Wilcox 26), 
White iie Ca 
Dry bottom lan 
Muhlenbergia mexicana Trin 
South Dakota: Huron (Griffiths 6), Brookings, Sioux Falls, Aurora County (Wilcox 
Moist bottom lands. Griffiths’ No. 6 is a form approaching the preceding species. 
A penses Thurb. 
South Dakota: Rosebud ire 61). 
Sandy soil of blow outs," e 
Eriocoma cuspidata Nutt. 
North Dakota: Rugby Junction (Brannon 96), Dickinson. 
South Dakota: Bad Lands along the Cheyenne River (Wallace 39). 
In sterile, sandy soil, growing in dense bunches. 
Oryzopsis micrantha Thurb. 
South Dakota: m of Sheep Mountain, near Cheyenne River ( Wallace 40). 
memi Tade 
North Dekota: 8 Forks (Brannon 18), Iola, Church's Tes Hillsboro, Fa argo, 
Oakes, 
