Camissonia scapoidea (T. & G.) Raven 



Naked-stemmed E\'ening-primrose 



NATURAL HERITAGE PROGRAM STATUS: G5/S3 



MONTANA STATUS: Sensitive 



GLOBAL DISTRIBUTION: Eastern Oregon to south-central Montana, south to 

 California, Arizona and New Mexico 



MONTANA DISTRIBUTION: Carbon, Choteau and Fergus counties 



PRYOR MOUNTAINS DESERT DISTRIBUTION: Cainissonia scapoidea is abundant 

 below 1525 m (5000 ft) on the south and west sides of the Pryor Mountains in drainages 

 of the Bighorn and Clarks Fork of the Yellowstone rivers. It occurs in sandy to clay soils 

 in many plant associations, including juniper woodlands and shrublands dominated by 

 Artemisia tridentata , Chrvsothamnus nauseosus and Atriplex gardneri . 



MANAGEMENT RECOMMENDATIONS: Camissonia scapoidea is an annual; thus, 

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

 levels of disturbance. This species is very common throughout the study area; more than 

 35 populations were located during the course of this study. It should not be given 

 special status on BLM's Miles City District. 



Castilleia anmistiroiia (Nuttall) G. Don 



Narrow-lc;ived Paintbrush 



NATURAL HERITAGE PROGRAM Si ATUS: G5/S3 



MONTANA STATUS: Limited Distribution 



GLOBAL DISTRIBUTION: Southeast Oregon lo southern Montana, south to Nevada. 

 Utah and Wyoming 



MONTANA DISTRIBUTION: Beaverhead and Carbon counties 



PRYOR MOUNTAINS DESERT DISTKIBU TION: Castilleia antiustifolia is common 

 and widespread through(nit the foothills and desert areas below 1830 m (6000 ft) both 

 south and west of the Pryor Mountains. Sinall to large populations occur on sandy or 

 sandy clay soils in juniper woodlands or. more ol'len, in plant associations dominated b\ 

 Artemisia tridentata or A. arbuscula. 



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