A detailed study of Taraxacum sect. Ruderalia for the 8th volume of the Flora of the Czech Republic revealed five new agamospermous species, viz. T. atroviride Štěpánek et Trávníček, T. clarum Kirschner, Štěpánek et Trávníček, T. moldavicum Chán, H. Ollgaard, Štěpánek, Trávníček et Žíla, T. urbicola Kirschner, Štěpánek et Trávníček and T. violaceifrons Trávníček. These species are formally described, thoroughly characterized morphologically and compared with similar taxa. They are known from numerous localities in Central Europe; T. moldavicum, in addition to the Central European distribution, is known to occur in two regions in Denmark. All these species are also documented by photographs of their general habit and important features.
Rubus silvae-bohemicae is described as a new regional apomictic species belonging to the subgen. Rubus sect. Rubus ser. Micantes Sudre. It is a nemophilous bramble occurring in south-western and southern Bohemia (Czech Republic) and adjacent parts of Bavaria (Germany). It differs from the somewhat similar species, R. indusiatus Focke, by having no stellate hairs on the undersides of the leaves and a lower number of shorter stalked glands and lower number of prickles on first-year stems. An illustration of the new species (including a photograph of the type specimen), a list of localities and a distribution map are presented.
The current state of the taxonomy of Rubus ser. Discolores in the Czech Republic is summarized. Since 1995, when the group was treated in the Flora of the Czech Republic (Holub 1995), six new species have been recognized, some of which are also known from adjacent areas. They are described in the present study: R. austroslovacus Trávníček, R. flos-amygdalae Trávníček et Holub, R. guttiferus Trávníček et Holub, R. parthenocissus Trávníček et Holub, R. pericrispatus Holub et Trávníček and R. portae-moravicae Holub et Trávníček. The first five belong to the group of triploid species close to R. montanus Lej. and R. grabowskii Weihe, whilst R. portae-moravicae is related to R. praecox Bertol. Two additional species, originally recognized under provisional names, were found to be identical to species described earlier: R. perperus H. E. Weber and R. phyllostachys P. J. Mueller; the latter is also found in Slovakia. At present, 17 indigenous species, one naturalized alien (R. armeniacus Focke) and one rare garden escape (R. ulmifolius Schott) of the ser. Discolores are known to occur in the Czech Republic. Distribution data and a key for the identification of all the species are presented.