| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Poaceae | Bouteloua aristidoides var. aristidoides | Three-awn Grama, Needle Grama | Dry prairies and loamy alluvial areas; eastwards on ballast. | C. and s. TX west to CA south into Mexico. | |
| Poaceae | Bouteloua barbata var. barbata | Sixweeks Grama | Dry grasslands in sandy soils, disturbed areas. | KS to CA, south to e. and s. TX, NM, AZ, and Mexico. | |
| Poaceae | Bouteloua chondrosioides | Sprucetop Grama | Prairies. | C. TX, w. TX, and s. AZ south into Mexico. | |
| Poaceae | Bouteloua curtipendula var. caespitosa | Side-oats Grama | Loose, calcareous soils. | OK, CO, UT, and CA south to s. TX, NM, AZ, and Mexico (to Argentina). |  |
| Poaceae | Bouteloua curtipendula var. curtipendula | Side-oats Grama | Prairies, dry rocky slopes and bluffs over calcareous rocks (such as limestone, dolomite, or calcareous shale) or ultramafic rocks (such as serpentine or metabasalt), limestone glades. | S. CT west to MT, south to VA, e. TN, nw. GA, AL, Panhandle FL (Gadsden County), TX, AZ, and CA; also in Central and South America. The older literature refers to B. curtipendula as introduced in SC, but the single specimen documenting its occurrence there appears to be from experimental plantings at Clemson University; there is apparently no evidence of its establishment there. B. curtipendula is now sometimes included in seed mixes, and appears as a waif or short-term introduction, including in the Piedmont of SC (K. Bradley, pers.comm., 2020). B. curtipendula occurs on serpentine in the Piedmont of GA (J. Allison, pers. comm.). |  |
| Poaceae | Bouteloua dactyloides | Buffalo Grass | Prairies, lawns, disturbed areas. | MN, MB, and AB south to w. LA, TX, NM, AZ, and widespread in Mexico. |  |
| Poaceae | Bouteloua dimorpha | Acapulco Grass | Cultivated as a turf grass, roadsides, disturbed areas. | Native of Mexico. | |
| Poaceae | Bouteloua eriopoda | Black Grama | Dry rocky slopes. | KS, CO, UT, and s. CA south to c. TX, NM, AZ, and widespread in Mexico (BCN, CHH, COA, DUR, NLE, SLP, SON, TAM, ZAC). | |
| Poaceae | Bouteloua gracilis | Blue Grama | Prairies, eastward in disturbed areas. | ON west to BC, south through c. and w. United States into Mexico (where widespread). Reported for SC (Gould 1979), but this is from a planting at an agricultural experiment station. |  |
| Poaceae | Bouteloua hirsuta | Hairy Grama | Maritime grasslands (FL), pine rocklands (FL), prairies and dry grasslands (TX, OK), xeric longleaf pine sandhills (GA), disturbed areas. | WI, MN, ND, WY, NV and s. CA south to sw. LA, TX, NM, and AZ and south into Mexico; disjunct in peninsular FL and in sw. GA. |  |
| Poaceae | Bouteloua pectinata | Tall Grama | Limestone outcrops. | OK south to s. TX | |
| Poaceae | Bouteloua repens | Slender Grama | Prairies and open brushland; or eastwards in disturbed areas. | OK, NM, and AZ south through TX to Mexico (where widespread) and n. South America; West Indies. | |
| Poaceae | Bouteloua rigidiseta | Texas Grama, Mesquite Grass | Prairies, roadsides, disturbed areas. | Sw. AR, OK, and e. NM south to w. LA, TX, and Mexico (CHH, COA, NLE, SON, TAM). | |
| Poaceae | Bouteloua simplex | Matted Grama | Disturbed areas. | Native of sw. United States and Mexico. | |
| Poaceae | Bouteloua trifida | Red Grama | Dry grasslands and rocky slopes. | TX, NM, UT, and CA south to Mexico (where widespread). | |
| Poaceae | Bouteloua uniflora | One-flower Grama, Nealley's Grama | Rocky calcareous soils. | TX south to Mexico (where widespread). |
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