Table Bl.--List of northeastern Montana plant communities. 



Highlighted types v/ere sampled in this study. An asterisk 

 indicates a newly described type. 



UPLANDS 



Forests and Woodlands (largely based on Roberts 1980 and 



Roberts et al. 1979) 



Abies lasiocarpa/Juniperus communis 



Abies lasiocarpa/Linnaea borealis 



Juniperus scopulorum/Oryzopsis micranthai; 



Juniperus scopulorum/Pseudoroegrieria ' spicata 



Picea spp. /Juniperus communis 



Picea spp./Linnaea borealis 



Pinus contorta/Juniperus communis 



Pinus contorta/Linnaea borealis 



Pinus ponderosa/Amelanchier alnifolia 



Pinus ponderosa/Arctostaphylos uva-ursi 



Pinus ponderosa/Carex inops 



Pinus ponderosa/Festuca idahoensis 



Pinus ponderosa/Juniperus horizontalis 



Pinusponderosa/ Juniperus scopuloruiti 



Pinus ponderosa/Mahonia repens 



Pinus ponderosa/Pseudoroegneria spicata 



Pinus ponderosa/Symphoricapos occidentalis 



Pseudotsuga menziesii/Amelanchier alnifolia 



Pseudotsuga menziesii/Arctostaphylos uva-ursi 



Pseudotsuga menziesii/Cornus canadensis 



Pseudotsuga menziesii/Juniperus scopulorum 



Pseudotsuga menziesii/Linnaea borealis 



Pseudotsuga menziesii/Mahonia repens 



Pseudotsuga menziesii/Muhlenbergia cuspidata 



Pseudotsuga menziesii/Pseudoroegneria spicata 



* Pseudot suga : menz ies i i/S ch i zachy r ium scopar lura 

 Pseudotsuga menziesii/Symporicarpos occidentalis 

 Pseudotsuga menziesii/Viola canadensis 



Shrublands 



igfilfi!m^^--ci!!ifpilcSpffS 

 Artemisia cana/Stipa comata 

 Artemisia longifolia/Oryzopsis hymenoidlp 

 Artemisia tridentata/Festuca campestris "■"" 

 Artemisia tridentata/Pascopyrum smithii 

 Artemisia tridentata/Pseudoroegneria spicata 

 Atriplex confertifolia - Artemisiasstasiidenteafesi 

 Ceratoides lanata/Stipa comata 



* Eleagnus commutata/Pascopyrun smithii 



Juniperus horizontal is/Schizachyrium scbpariiim 

 Rhus trilobata/Pseudoroegneria spicata 

 Sarccbatus ver~iic^-: Ictus: - Atriplex gardneri^ 

 Sarcobatus vermiculatas/rascopyrum 



38 



1 -L ^ ; • -L i- 



