Quercus robur 'Royal' Kelsey & Dayton Standardized Plant Names, Ed. 2, 508 (1942) nom. illegit. is a synonym of Quercus robur (Purple-Leaf Group) 'Purpurascens' DC. (1808) |
Infrageneric Classification Subgenus Quercus, Section Quercus |
Nomenclature Note Superfluous renaming = Q. robur 'Purpurascens' DC. (1808) |