Didukh A.Y.,O. V. Fomin Botanical Garden |
Mazur T.P.,O. V. Fomin Botanical Garden
Hydrobiological Journal | Year: 2014
On the basis of complex studies of the genus Trapa L. in nature and in open and protected beds of the O. V. Fomin Botanical garden, four species were confirmed: T. natans L., T. rossica V. Vassil., T. pseudocolchica V. Vassil., T. borysthenica V. Vassil. Three taxa T. rossica V. Vassil. var. pseudorossica (V. Vassil.) A. Didukh comb. nov., T. rossica V. Vassil. var. ucrainica (V. Vassil.) A. Didukh comb. nov., T. pseudocolchica V. Vassil. var. macrorhiza (Dobrocz.) A. Didukh comb. nov. were proposed to be changed from the species rank to the variety rank. A key for identification of the species and varieties of Trapa in Ukrainian flora was compiled. The main diagnostic and morphological characteristics for identification of species and varieties (mainly of the fruit) have been determined, and those that cannot be used for identification because of high variability or similarity. © Trapa, complex studies, critical taxonomic analysis, flora of Ukraine, introduction.