21. Artemisia tridentata / Agropyron spicatum 



c.t 24 



22. Artemisia trident at a - Atriplex 



conf ertif olia c.t 25 



23. Sarcobatus vermiculatus - Artemisia 

 tridentata c.t 26 



24. Artemisia tridentata / St ipa comata c.t. 27 



25. Atriplex nuttallii - Artemisia spinescens 



c.t 28 



26. Artemisia tridentata / Atriplex nuttallii 



c.t 29 



27. Atriplex nuttallii / Monolepis nuttalliana 



c.t 29 



28. Potentilla f ruticosa / Festuca idahoensis 



c.t 30 



29. Sarcobatus vermiculatus / Atrip lex 

 nuttallii c.t 31 



Grasslands 32 



30. Aqropyron spicatum / cushion plant c.t. . 32 



31. Chrysothamnus nauseosus / Erioqonum 

 brevicaule c.t 33 



32. Festuca idahoensis - Aqropyron caninum 



c.t 33 



33. Carex rupestr is / Potent ilia ovina c.t. . 34 

 Incidental Types 35 



DISCUSSION 36 



Rarity and Biogeography 36 



Management Considerations 37 



Exotic Species 38 



Grazing 38 



ORV Use 39 



Mining 39 



Protecting Biological Diversity 39 



ACKNOWLEDGEMENTS 40 



LITERATURE CITED 41 



APPENDIX A. Vascular Plant Species List 44 



APPENDIX B. Vascular Plant Constancy and Coverage .... 53 



APPENDIX C. Key to the Community Types 75 



