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New rich locality of Hippuris vulgaris (Hippuridaceae) in Cracow. Fragmenta Floristica et Geobotanica Polonica 8: 143–147. Kraków. PL ISSN 1640 629X. ABSTRACT: A new locality of Hippuris vulgaris L. – rare species in southern Poland has been described. It is situated in the artificial water reservoir in Cracow. Probably, it is the only one locality of this species existing in the city area.