title: The genus Navicula in ancient basins. I. Two novelties from the Black Sea
abstract: Backgrounds and aims – In this paper results on Navicula s. str. species from the (sub)littoral zone of the Black Sea are presented. Navicula pinnata var. pontica Mereschk. was originally described from the Black Sea in the early 20th century but, due to mistakes, incorrectly referred to in the literature as Navicula pennata A.W.F.Schmidt var. pontica Mereschk. A second species, Navicula parapontica sp. nov. is described as new for science. Analysis of recent and historical diatom assemblages re
journal: Plant Ecology and Evolution