Abstract
Two species names of the genus Potamogeton Linnaeus (1753: 126) are here typified: P. panormitanus Bivona-Bernardi in Bivona (1838: 6, sub P. panormitanum) and P. tuberculatus Tenore & Gussone in Tenore (1842: 4, sub P. tuberculatum). Potamogeton panormitanus is considered as a synonym of P. pusillus Linnaeus (1753: 127) (see Parlatore, 1860; Preston 1995; Wiegleb & Kaplan 1998; Garcia-Murillo 2010) and P. tuberculatus as a synonym of P. trichoides Chamisso & Schlechtendal (1827: 175) (see Parlatore, 1860; Wiegleb & Kaplan 1998; Garcia-Murillo 2010).