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	Morfologická variabilita a určování terestrických forem středoevropských druhů lakušníků \kur{(Ranunculus} sect. \kur{Batrachium)} VLČKOVÁ, Linda Ranunculus sect. Batrachium is a considerably complicated group of aquatic plants. Some of the species can facultatively grow terrestrially on wet sediment surface. Due to their extensive phenotypic plasticity, they form terrestrial modificants in the terrestrial conditions. This theses deals with the Central European species that create the terrestrial modificants, namely Ranunculus aquatilis, R. baudotii, R. peltatus, R. rionii, R. trichophyllus A and R. trichophyllus B (two distinct cytotypes of Ranunculus trichophyllus). The aim of this theses is to establish whether the terrestrial forms of these species differ in their morphology. The species were determined using flow cytometry, and then morphological features were measured. Subsequently, the data were analysed using multivariate statistical methods to assess whether the terrestrial modificants can be determined. Detailed record
	Určování terestrických forem lakušníků (\kur{Ranunculus} sect. \kur{Batrachium}) VLČKOVÁ, Linda Ranunculus sect. Batrachium is one of the most intricate groups of aquatic plants. Apart from typical submerged plants, they may grow also terrestrially and determination of the terrestrial forms is very difficult. The aim of this thesis was to establish whether the terrestrial forms of Ranunculus trichophyllus and Ranunculus peltatus differ in their morphology. The species were determined by flow cytometry and the morphological features were measured and analysed. Detailed record
	Evolution and systematics of water-crowfoots (Ranunculus sect. Batrachium) Hanzlíčková, Johana ; Prančl, Jan (advisor) ; Bílá, Jana (referee) Water-crowfoots (Ranunculus sect. Batrachium) are among the most complicated groups of aquatic angiosperms. Processes such as polyploidization (there are five known ploidy levels) and hybridization play the main role in evolution of the subgenus, resulting into thereticulate evolution of the whole genus Ranunculus. Furthermore, newly established hybrids and polyploids can be fixed in nature via clonal growth or autogamy. Fenotypic plasticity and considerable morphological reduction contribute to the taxonomic complexity of the group and in combination with microevolutionary processes lead to the existence of cryptic variation.Therefore it can be said that the current taxonomic classification is dubious and requires a revision. The thesis also includes a brief introduction to the cryptic species complex Ranunculus trichophyllus agg. and a description of methods which will be applied in following master thesis. Detailed record

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