Quercus protoroburoides SynonymySource: Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity.Quercus protoroburoides Donchev & Bouzov ex Tashev & Tsavkov in Phytotaxa 308(2): 233. 2017ContentDistribution Bibliography Distribution ● Bu Euro+Med endemicA: Bulgaria nativeA Bibliography A. Tashev & Tsavkov 2017: – Phytotaxa 308(2). p 233 (as Quercus protoroburoides Donchev & Bouzov ex Tashev & Tsavkov)