31. "Rubus fagifolius " is a climbing perennial sometimes reaching 18 meters above the ground. 32. The only other vascular plant endemic to Derbyshire which is found nowhere else, is Rubus durescens. 33. Berries of the genus rubus , such as blackberries, were a common source of dyes in antiquity. 34. Fernald's cuckoo bumblebees pollinate " Potentilla, Rubus ", clovers, and goldenrods. 35. In particular, he made important contributions to the study of the genus " Rubus ". 36. "Rubus pedatus " is a low shrub or herb with thorn-less creeping stems. 37. "Rubus superbus " is a perennial with wool and a few prickles but not many. 38. "Rubus uhdeanus " is a perennial with light hair and a few small curved prickles. 39. Try brilliant mums combined with rubus and golden creeping Jenny or mix mums, various salvias and autumn fern. 40. The British National Collection of " Rubus " is held by Barry Clark at Houghton, Hampshire.