12 University of Texas Bulletin 



Stipa leucotricha Trin. Needle Grass. Awn Grass. Porcupine Grass. 



Abundant in dry fields, roadsides or open woods. University cam- 

 pus, etc. 



Texas. 



Tribe Aveneae 



Trisetum interruptum Buckl. 



Dry soil. University campus, etc. 

 Texas. 



Tribe Chlorideae 



Atheropogon curtipendulus Tourn. (Bouteloua curtipendula Torr.) 

 Tall Mesquite Grass. Side Oats. Grama Grass. 

 Common in dry soil. University campus, etc. 

 Common in the prairie states and eastward. 



Bouteloua hirsuta Lag. (B. hirta Scribn.) Hairy Grama Grass. 

 Black Grama Grass. Mesquite Grass. 

 Dry ground. 

 Prairies of the central states. 



Boutelou trifida Thurb. Mesquite Grass. 

 Dry hillsides. 

 Texas and Arizona. 



Bulbilis dactyloides Raf. Buffalo Grass. 

 Dry ground. University campus, etc. 

 Plains and prairies of the central states. 



Capriola dactylon Kuntze. Bermuda Grass. 



Abundant everywhere. Used extensively for lawns. 



Naturalized from Europe. Abundant in the southeastern states. 



Chloris cucullata Bisch. 

 Gravelly soil. 

 Texas. 



Chloris tenuispica Nash. 

 University campus, etc. 

 Texas. 



Chloris verticillata Nutt. Windmill Grass. 

 Dry soil. University campus, etc. 

 Arkansas to Kansas and Texas. 



