Figure 2. 



0.05 0.05 .1 O.I S 0.2 0^:5 

 Scale in Miles 



Medicine Lake 



Vegetation of Big Island RNA 



Medicine Lake NWR 



Shrub Communities 



1 Symphoricarpos occidentalis 



la Symphoricarpos occidentalis (Bromus inermis) 

 lb Symphoricarpos occidentalis (Euphorbia esula) 



2 Symphoricarpos occidentalis (Agropyron smithii) 

 2a Symphoricarpos occidentalis (Prunus virginiana) 



3 Symphoricarpos occidentalis (Distichlis stricta, 

 Euphorbia esula) 



4 Symphoricarpos occidentalis (Spartina pectinata) 



5 Prunus virginiana 



5a Prunus virginiana (Symphoricarpus occidentalis) 



6 Sarcobatus vermiculatus (Prunus virginiana, 

 Agropyron cristatum) 



7 Sarcobatus vermiculatus (Agropyron cristatum, 

 Hordeum jubatum, various exotics) 



Grassland Communities 



8 Agropyron smithii-Stipa Comata 



8a Agropyron smithii-Stipa comata 



(Calamovilfa longifolia-Agropyron smithii) 



9 Agropyron smithii-Stipa comata-Bouteloua gracilis 



10 Distichlis stricta 



11 Juncus balticus-Carex praegracilis 



lla Juncus balticus-Carex praegracilis (Poa pratensis) 



12 Spartina pectinata (Phragmites communis) 

 Disturbed Communities 



13 Bromus inermis 



14 Bromus inermis-Agropyron cristatum 



15 Descurainia sophia (Pelican damage) 

 m Unkown Plant Communities 



Beach 

 Water 

 Ephemeral water 



At the given map scale not all community or dominance types can be 

 effectively mapped which necessitates multiple labels and designations 

 of inclusions. Brackets enclose community types or species that consittite 

 in canopy cover up to 20% of a polygon; of polygons labeled as having two 

 community types the first hsted is the more extensive and separated from 

 the lesser by a colon. Forward slashes (/) or dashes (-) separate the 

 constituent species by which a plant community or association is named. 

 Vegetation map units from 8": 1 mile (1 :7920) aerial photography. 

 Field verified June, 1 997. Albers Equal Area Projection Datum NAD27. 



June 15, 1998 



Montana Natural Heritage Program, 1515 East Sixth Ave, Helena, MT 59620 



