MANAGEMENT RECOMMENDATIONS: Although known populations are large, A, 

 F oreganus is rare in the study area and Montana. Effects of livestock grazing are 



unknown. This species should receive special status on BLM's Miles City District. 



Camissonia andina (Nuttall) Raven 



Obscure Evening-primrose 



NATURAL HERITAGE PROGRAM STATUS: G4/S2 



MONTANA STATUS: Sensitive 



GLOBAL DISTRIBUTION: Southern British Columbia to Alberta, south to California. 

 Nevada and Wyoming 



MONTANA DISTRIBUTION: Carbon and Missoula counties 



PRYOR MOUNTAINS DESERT DISTRIBUTION: Camissonia andina is local and 

 rare to common from 1220 to 1890 m (4000 to 6200 ft) on the south side of the Pr>'or 

 Mountains and in the foothills. Six populations of C andina were located in the study 

 area, and only two of these were large. It occurs in sandy soil and is usually associated 

 with shrubs such as Artemisia tridentata and Cercocarpus ledifolius . One population 

 occurred in Douglas fir-Utah juniper woodland. 



MANAGEMENT RECOMMENDATIONS: Camissonia andina is an annual; thus, 

 population sizes may very greatly among years and may respond positively to moderate 

 levels of disturbance. This species is uncommon in the study area; the majority of known 

 populations were small. It should receive special status on BLM's Miles City District. 



Camissonia minor (\. Nelson) Raven 



Small-Howered Evening-primrose 



NATURAL HERITAGE PROGRAM STATUS: G4/S2 



MONTANA STATUS: Sensitive 



GLOBAL DISTRIBUTION: Eastern Washington to eastern Montana, south to 

 California, Nevada and Colorado 



MONTANA DISTRIBUTION: Carbon and Rosebud counties 



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