60 UNIVERSITY OF MISSOURI STUDIES [208 



36y 2 . HIEROCHLOE Gmel. Holy grass. 



51^. H. odorata (L.) R. and S. [Savastana odorata (L.) 

 Scribn ; H. borealis R. and S.] Sweet holy grass. 



Redrock lake, 10100 ft. (Ramaley & Robbins). 



Labrador to Alaska ; New Jersey to Arizona ; Europe : 

 Asia. 



37. ARISTLDA L. Triple-awned grass. 



52. A. fasciculata Torr. Bushy poverty-grass. 



In the plains, scarce, 5100-5700 ft. (Daniels, 777). 

 Kansas to California; Texas to Mexico. 



53. A. longiseta Steud. Long-awned poverty-grass. 

 Abundant on the plains, mesas and foothills, 5100-8500 ft. 



(Daniels, 300). Also on the mountains between Sunshine 

 and Ward (Rydberg). 



Illinois to Washington; Texas to Mexico. 



38. STIPA L. Porcupine grass. 



54. S. comata Trin. & Rupr. Western porcupine grass. 

 Common on the plains and foothills, 5100-8500 ft. (Dan- 

 iels, 197). 



Alberta to Alaska; New Mexico to California. 



55. S. viridula Trin. [S. parviflora Americana Schultes]. 

 Greenish porcupine grass. 



Common on the plains, mesas, and foothills, 5100-8500 

 ft. (Daniels, 301). Also at Gato (Rydberg). 

 Saskatchewan to Montana; Kansas to Utah. 



56. S. Nelsonii Scribn. Nelson's porcupine grass. 



On the mesas, foothills, and mountain sides, 5700-10000 

 ft. (Daniels, 365). 



Assiniboia to Idaho and Colorado. 



57. S. Scribneri Vasey. Scribner's porcupine grass. 



On the plains, mesas, foothills and mountainsides, 5100- 

 9500 ft. (Daniels, 749). 



Colorado to New Mexico. 



