64 UNIVERSITY OF MISSOURI STUDIES [212 



NEWFOUNDLAND to BRITISH COLUMBIA; NORTH CAROLINA to 

 UTAH: EUROPE. 



48. AGROSTIS L. BENT-GRASS. 



78. A. alba L. WHITE BENT-GRASS. RED-TOP. 



Common about ditches and swales throughout the culti- 

 vated area, and already penetrating remote canons, where 

 the smaller forms are quite possibly native. The larger 

 cultivated form is A. alba vulgaris (With.) Thurber, 5100- 

 8600 ft. (Daniels, 689). 



Mostly naturalized from EUROPE, and now in all temper- 

 ate lands; there are indigenous boreal and alpine forms in 

 NORTH AMERICA. 



79. A. asperifolia Trin. [A. exarata Coult. in part, not Trin.]. 

 HARSH BENT-GRASS. 



Moist meadows throughout, 5100-10500 ft. (Daniels, 376) 

 MANITOBA and NEW MEXICO to CALIFORNIA. 



79^2. A. Rossae Vasey [A. variant Trin.]. Miss Ross's BENT- 

 GRASS. 



Long's Peak (Holm). 

 BRITISH COLUMBIA to COLORADO and CALIFORNIA. 



80. A. hyemalis (Walt.) B. S. P. [A. scabra Willd.]. HAIR- 

 GRASS. 



Common throughout in both dry and moist soil, 5100- 

 iiooo ft. (Daniels, 374). Also on the mountains between 

 Sunshine and Ward (Rydberg). 



NORTH AMERICA, except the extreme north. 



80%. A. tenuiculmis Nash [A. tenuis Vasey]. THIN BENT- 

 GRASS. 



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

 MONTANA to WASHINGTON; COLORADO to CALIFORNIA. 



49. CALAMAGROSTIS Adans. REED-GRASS. 



81. C. purpurascens R. Br. [Deyeuxia sylvatica Vasey, 

 not DC.]. PURPLE BLUE- JOINT. 



Barren ridges in the foothills and mountains, common, 

 6000-12500 ft. (Daniels, 700). Long's Peak (Holm). 

 GREENLAND to ALASKA; COLORADO to CALIFORNIA. 



