CONTENTS 



INTRODUCTION 



ACKNOWLEDGEMENTS 

 PREVIOUS RESEARCH 



STUDY AREA . . . 

 Physiography 

 Climate . . 



METHODS 



Data Collection , . , . 



Data Analysis 



Taxonomic Considerations 



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RESULTS AND DISCUSSION 



Community Type Classification 



Vegetation-Environmental Relationships 



Community Type Descriptions 



1. Pinus albi caul is - Abies lasiocarpa 



2 . Pinus f lexilis/Aqropyron spicatvim 



3. Pinus f lexilis/Cercocarpus ledifolius . . . 



4 . Pseudotsuqa menziesii/Cercocarpus ledifolius 



5. Juniperus scopulorum/Artemisia tridentata 



6. Juniperus scopulorum/Cercocarpus ledifolius 



7 . Artemisia arbuscula/Aqropyron spicatvim . 



8. Artemisia tridentata/Aqropyron spicatum 



9 . Artemisia tridentata/Festuca idahoensis 



10. Artemisia tripart it a/Fes tuca idahoensis 



11. Atriplex nuttallii/Oryzopsis hymenoides 



12. Cercocarpus ledifolius/Aqropyron spicatum 



13. Cercocarpus ledifolius/Festuca idahoensis 



14. Aqropyron dasystachyum/Phacelia hastata 



15. Aqropyron spicatum/Oryzopsis hymenoides 



16. Picea enqelmannii/Equisetum arvense . . . 



17 . Populus trichocarpa/Cornus stolonifera . . 



18. Salix exiqua 



19. Aqropyron smithii 



20. Elymus cinereus 



21. Phalaris arundinacea , 



Special Status Plant Observations 



CONCLUSIONS 



LITERATURE CITED 



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