The existence of pollination syndromes and the degree of specialization in these systems are still discussed. Three examples from the tropical mountain communities in the Bamenda Highlands (Cameroon) show that a detailed knowledge of plants and their visitors and pollinator behavioral studies are necessary before evolutionary hypotheses can be formulated., Michael Bartoš, Eliška Padyšáková, Štěpán Janeček., and 7 barev. fot.
New insights into the evolutionary processes that have fostered the species richness of Cape flora (in particular genome duplication) have been gained by Czech researchers during the last few years. Pleasures and pains of botanical research in this world biodiversity hotspot are summarized. and Jan Suda.
This area in Central Bohemia is characterized by predominantly limestone bedrock and fully-developed karstic phenomena – the main reasons for its high botanical di - versity and occurrence of many rare and endangered species. In the center of the area, well-developed broad-leaved forests are found, as well as xerothermophilous non-forest vegetation. At the borders of the area, acidophilous, basiphilous and serpen - tinophilous plants occur on non-calcareous rocks (e. g. slates, basaltoids, picrites). and Pavel Špryňar.
Although it has been generally reported that carnivorous plants of the genus Nepenthes are not very selective about their prey, the new studies have shown that the genus is under a strong selective pressure to specialize in certain prey. Moreover, novel nutrient sequestration strategies have recently been described, including leaf litter and faeces utilization. Thus the genus Nepenthes is a new and illustrative example of adaptive radiation with regard to nitrogen sequestration strategy. and Andrej Pavlovič.