Right after the eglantine rose (here) in the Art of Instruction cards came the dog rose:
Rosa canina (commonly known as the dog rose) is a variable climbing wild rose species native to Europe, northwest Africa and western Asia.
It is a deciduous shrub normally ranging in height from 1–5 m, though sometimes it can scramble higher into the crowns of taller trees. Its stems are covered with small, sharp, hooked prickles, which aid it in climbing. The leaves are pinnate, with 5-7 leaflets. The flowers are usually pale pink, but can vary between a deep pink and white.
… The dog rose was the stylized rose of medieval European heraldry, and is still used today. (Wikipedia link)