﻿Rydberg: Phytogeographical notes 



Agropyron spicatum 



" Richardsonii 



* " albicans 



Agropyron Gmelini 

 * " dasystachyum 



Sitanion montanum 



4. Mountain Slopes and Hillsides 

 The mountain slopes in the Montane Zone resemble closely 

 those of the Subalpine Zone, but are more common and of greater 

 extent. The number of species is much larger. As stated under 

 the Subalpine Zone, the most important species in the Northern 

 Rockies is Festuca ingrata, and its place is taken on the southern 

 slopes of the Southern Rockies by F. arizonica and F. Thurberi. 

 The following species are represented in both the Northern and 

 the Southern Rockies : 



*Stipa viridula 



^Festuca saximontana 



" Nelsonii 



" ingrata 



" minor 



" confinis 



" Vaseyi 



XBromus Richardsonii 



Oryzopsis exigua 



" Pumpellianus 



Agrostis hiemalis 



] Agropyron andinum 



^Trisetum subspicatum 



t " violaceum 



t " majus 



* " tenerum 



Poa longiligula 



*Sitanion elymoides 



t " epilis 



*Elymus canadensis 



t " paddensis 





" laevigata 





The following are restricted 



to one region : 



Southern Rockies 



*Trichachne saccharatum 



Poa longipedunculata 



Stipa Scribneri 



" Sheldonii 



Muhlenbergia gracilis 



%Festuca fratercula 



subalpina 



§ " arizonica 



Melica Porteri 



§ " Thurberi 



Poa aperta 



Bromus lanatipes 



" macroclada 



" Porteri 



" Fendleriana 



^Sitanion molle 



