American Rose Annual 32:173-192 (1947)
Classification and Breeding of Polyantha Roses
By DR. WALTER E. LAMMERTS

A very complex hybrid polyantha is the cross of Karen Poulsen X R. moyesi, called Langley Gem. This is actually a polyantha X hybrid tea X hybrid tea X R. moyesi. It has leathery bronzy foliage and even if only partially fertile should be useful in introducing the unique blood red color.