Book  (2002)  
 
Rosa blanda....The stems are mostly spineless, except down low, but a vast population on Mt. St. Pierre in Quebec confused even the experts with its thorns - it turned out to be the very local var. hispida.

Book  (1976)  Page(s) 112.  
 
R. blanda carpohispida (Schuette) Lewis (R. blanda hispida Farwell) - Canes densely covered with bristles.