Between 1928 and 1931, during the tenure of Prefect Giuseppe Gola, the collections of the various compilers were broken up, and specimens of the same species ordered in two groups based on a primarily geographical and ultimately systematic classification. One group became the Herbarium Venetum, comprising plants from north-eastern Italy and the Balkan peninsula. The other group, now the General Herbarium, comprised specimens collected from elsewhere in the world: mainly the various Italian regions, but also European countries, Africa (especially the Maghreb), parts of Asia and, on the American continent, certain countries of the United States, Brazil and Argentina. The two herbaria — still open today — contain the original specimens collected by those who helped to build the heritage we currently enjoy. They include: F. Ardissone, B. Balansa, J. Ball, A. Béguinot, A. Bérenger, G. Bizzozero, P. Bolzon, G.A. Bonato, L.A.G. Bosc, G. Briosi, A. Chiamenti, G. De Notaris, R. De Visiani, F. De Pisis, G. Doria, P. Favero, A. Fiori, P. Fontana, A. Forti, A. Goiran, E. Levier, A. Marcello, C. Massalongo, M. Minio, G. Moretti, I. Nievo, Nocca, F.W. Noë, T.G. Orphanides, R. Pampanini, J. Pancic, J. Pantocsek, A.G.O. Penzig, W. Pfaff, A. Piccone, T. Pichler, G.L. Rabenhorst, H.S.L.F.F. Rehm, P.A. Saccardo, G. Soldera, R.F. Solla, A. Spranzi, P. Sydow, S. Tonzig, G.B. Traverso, A. Trotter, U. Ugolini, P. Voglino, S. Zenari.