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 cafions, 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. Rcssae Vasey \A. varians Trin.]. Miss Ross's bent- 

 grass. 

 Long's Peak (Holm). 

 British Columbia to Colorado and California. 



80. A. hyemalis (Walt.) B. S. P. [A. scahra 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.temns Vasey]. Thin bent- 

 grass. 

 Redrock lake, loioo 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.j. 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. 



