Taxonomic features of fruits and seeds of Nymphaea and Nuphar taxa of the Southern Baltic region

Karol Latowski 1 , Cezary Toma 2 , Magdalena Dąbrowska 3  and Egita Zviedre 4
  • 1 Department of Plant Taxonomy, Institute of Environmental Biology, Adam Mickiewicz University, Umultowska 89, 61-614 Poznań, Poland,
  • 2 Department of Carpology, Institute of Environmental Biology, Faculty of Natural Science, Kazimierz Wielki University, Ossolińskich 12, 85-093 Bydgoszcz, Poland
  • 3 Department of Botany and Nature Protection, University of Warmia and Mazury, Plac Łódzki 1, 10-727 Olsztyn, Poland / Institute of Botany, Jagiellonian University, Kopernika 27, 31-501 Kraków, Poland
  • 4 Department of Botany and Ecology, University of Latvia, Kronvalda bulv. 4, Riga, Latvia

Abstract

Research was carried out on fruits and seeds of Nymphaea and Nuphar taxa collected from Poland, Latvia and Estonia. The aim of the research was to establish diagnostic features which could enable identification of the examined taxa on the basis of the fruit and seed structure and creating a key to identify them. The examined organs were observed through an optic microscope and scanning electron microscope (SEM). New diagnostic features were discovered: spotting of fresh pericarp, the range of the fruit shape coefficient, the colour of the rays in the fruit stigma disc, the thickness of the seed testa, ribs in the seeds, and occurrence of the “puzzle shaped” cells on the surface of the testa. The discovered features were used in the taxonomic characteristics.

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