Two new Rubus species from Switzerland and other parts of Central Europe

Rubus landoltii H. E. Weber nov. spec. (subgen. Rubus sect. Rubus ser. Micantes Sudre), named after Prof. Dr. Elias Landolt (Institute of Geobotany ETH Zurich), is similar to Rubus micans Godron, and differs from this by the serration and hair-covering of its leaves and other features. Till now it is only known from Switzerland (Canton Zurich and adjacent parts of Canton Aargau). Rubus rhombicus H. E. Weber nov. spec. (subgen. Rubus sect. Corylifolii ser. Subcanescentes H. E. Weber) is a characteristic species of its series and named after its more or less rhombic terminal leaflets. It is widely distributed in Switzerland (known from Cantones Schaffhausen, Thurgau, Zurich, and Vaud), Germany (Rheinland-Pfalz, Baden-Wurttemberg, Bavaria, and Thuringia), and France (Alsace). The known distribution of both species is pointed out and proved by exemplary specimens. Photographs of the holotypes are added.