Trapa wolgensis SynonymySource: Marhold, K. (2011+): Trapa. – In: Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity.Trapa wolgensis V. N. Vassil. in Novosti Sist. Vysš. Rast. 10: 197. 1973ContentDistribution Bibliography Distribution Rf(C E) Euro+Med: Russia (C European Russia nativeA, E European Russia nativeA) Bibliography A. Fedorov, A. A. 1996: Flora Europae Orientalis 9. – Petropoli: Mir i Semia-XCV