We were gifted this little green "roller" from John Grimshaw, Director of the Yorkshire Arboretum at Castle Howard. As he handed us a nondescript pup, we wondered what magical thing attended this to earn a place in his exquisite collection. "This is from the garden of Carl Linnaeus" STFU! The Father of Binomial Nomenclature!?! Linnaeus & Grimshaw - now that's provenance! Plant geek manna from botanical heaven. This is possibly Jovibarba globifera subsp. allionii.