I' 



AN OUTLINE MAP OF NEW MEXICO SHOWING THE DISTRIBUTION OF THE PRINCIPAL 



GRASS SOCIETIES. 



clniuiiiaiil sjn'cies 



It 



'I'Ik- Blue Grauia Sij<icly. 'I'lic socioty ill which Jiliic Cii'aiua is 

 covers thi- higlicr ]il:inis. tlio forest, and woodlaiul ni'cas. 



The Black Graiua Socicly. This is the society which occupies the lowei' plains of the Ter- 

 ritory- The principal grasses are Black Graiua. Tobosa, and the Needle Grasses. 



This society is interuii'diate hetween 1 and 2. The characteristic grass is Hairy Grama, 

 which replaces uiuch of the Blue (irania and all nf the Black Graiua. 



'J'he Salt (irass Society. .Mainly cnuimsnl of Uniicli Cirass and Salt Grass, with sedges and 

 rushes in wet situations. 



The Arizona Fescue Society. The doniiuant grass is Arizona Fescue. 'J"he society usually 

 occurs high in the mountains on open slopes aud "burns." 



