Sorbus scopulina Greene's mountain ash

Sorbus scopulina Greene's mountain ash

Sorbus scopulina Greene's mountain ash

Sorbus scopulina Greene's mountain ash

Sorbus scopulina Greene's mountain ash

Information from USDA Plants Database 

http://plants.usda.gov/java/profile?symbol=sosc2

https://www.google.com/search?q=Sorbus+scopulina+Greene's+mountain+ash&hl=en&source=lnms&tbm=isch&sa=X&ei=gQ1LUcHcAsGviQLmgoDIDg&ved=0CAcQ_AUoAQ&biw=1008&bih=522