Heliosperma (nom. cons prop.) comprises 15—20 taxa, most of them endemic to the Balkan Peninsula. DNA sequences from the chloroplast (rps16 intron, psbE-petG spacer) and the nuclear genome (ITS and four putatively unlinked RNA polymerase genes) are used to elucidate phylogenetic relationships within Heliosperma, and its position within Sileneae. Three main lineages are found within Heliosperma: Heliosperma alpestre, H. macranthum and the H. pusillum-clade. The relationships among the lineages differ between the plastid and the nuclear trees. Relative dates are used to discriminate among inter- and intralineage processes causing such incongruences, and ancient homoploid hybridisation is the most likely explanation. The chloroplast data strongly support two, geographically correlated clades in the H. pusillum-group, whereas the relationships appear poorly resolved by the ITS data, when analysed under a phylogenetic tree model. However, a network analysis finds a geographic structuring similar to that in the chloroplast data. Ancient vicariant divergence followed by hybridisation events best explains the observed pattern. The morphological and taxonomical diversity in the H. pusillum-group is possibly ecology-induced, and is not correlated with the molecular data. Phylogenetic patterns regarding the origin of Heliosperma are complicated, probably influenced by reticulate and sorting events. At least two ancient lineages have been involved in its evolution, one most closely related to Viscaria/Atocion and the other to Eudianthe/Petrocoptis. Atocion and Viscaria are sister genera, most species-rich on the Balkans, and including six/three species. Phylogenies do not support their traditional classification, and provide a framework for a taxonomic revision. Atocion compactum is found in three different positions in the chloroplast tree, and in a single clade in the nuclear gene trees. Using relative dates we demonstrate that hybridisation with subsequent chloroplast capture is a feasible explanation for the pattern observed. This, and other observed reticulate patterns, highlights the importance of hybridisation in plant evolution.

Classical mythology has been one of the main sources of inspiration for European artists for centuries. It also remained current during the 20th century. From the 1920s, one can see increasing interest in classical myths; it becomes a source of inspiration even for artists of avant-garde art movements. The 20th century artist approach themes from classical mythology from a position of newly acquired artistic freedom. Release of iconographic conventions and academic rules, emphasis on psychology and individuality of a modern man brings specific forms of reception and reinterpretation of classical myths. In many cases, classical mythology carries allegorical meanings in a relation to contemporary political and social events, often in a very critical tone. But it also represents a tool for one's personal coping with reality. The thirties and early forties of the 20th century with dark atmosphere affected by war conflicts represent the culmination period of classical myths in visual arts. The tendency can be observed both in the art of European and Czech origin. Antiquity and classical mythology become the symbols of a return to the roots of European culture and civilization, symbols of the common European humanistic heritage. The collection of nearly 180 works of modern Czech art inspired by classical...

Esta tese estuda a adivinhação nas sete tragédias supérstites de Ésquilo entendendo-se a adivinhação não no sentido estrito de revelação de fatos futuros, mas no sentido mais amplo de um diálogo que se estabelece entre as instâncias divina e humana valendo-se de formas e recursos variados. Assim, a análise e interpretação destas tragédias priorizam os diversos aspectos deste diálogo divinatório para mostrar a adivinhação como fundamento da construção de estratégias dramáticas na tragédia esquiliana, por informar e definir tanto a peculiaridade desta poética quanto sua visão do mundo. / This thesis studies divination in the seven surviving tragedies of Aeschylus. Divination is taken here not in the strict sense of revelation of future events, but in the broader sense of a dialogue that is established between divine and human levels through a variety of forms and resources. Thus, the analysis and interpretation of these tragedies prioritises the different aspects of this divinatory dialogue, in order to show that divination is the basis for constructing the dramatic strategies in the tragedies of Aeschylus, since it informs and defines both the particular features of this poetics and its view of the world.

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Ancien élève de Husserl et Heidegger, Günther Anders (1902-1992) composa une oeuvre philosophique dont la particularité est d'interroger la situation de l'homme face aux événements les plus sombres du 20e siècle. Ce travail, élaboré à partir d'une lecture de l'oeuvre éditée à ce jour, complétée par celle du Nachlass, vise à ressaisir l'unité, la cohérence et la singularité de sa pensée autour d'une question majeure : comment un monde technicisé, un monde sans hommes, est-Il compatible avec une éthique pour des hommes sans monde ? Décrire les ombres du monde, celles d'abord laissées par un monde humain technicisé, c'est déceler les idéalités de la technique qui recouvrent chaque chose d'une évidence artificielle. Observer le monde fabriqué par des hommes devenus des ombres, c'est aussi percevoir qu'ils peuplent un environnement dont ils sont les produits. Ce monde artificiel, à défaut de ne faire que soulager l'hostilité naturelle, ajoute d'autres souffrances au poids de la nécessité, que les arts parviennent à peine à déjouer. Théoriser les ombres du monde, c'est relever la négativité d'un nihilisme réalisé par la technique, à refuser. L'hypothèse philosophique ici défendue est celle d'un nihilisme métaphysique conçu comme préalable nécessaire au refus de toute autre pratique nihiliste. A cet effet, à partir de l'oeuvre d'Anders se conçoit une philosophie occassionnelle comme pratique théorique d'une sobriété tragique. Si briser toute idée métaphysique aboutit à désenchanter les victimes de trop naïves généralités, cette théorie n'impose cependant en rien de s'interdire de faire de la métaphysique. / As a former student of Husserl and Heidegger, Günther Anders (1902-1992) wrote a philosophical work which characteristic is to examine the situation of man facing the darkest events of the 20th century. Our thesis developed with a reading of the edited work supplemented by the Nachlass, aims to synthesize the unity consistency and uniqueness of his thoughts by asking a specific question : how a technical world, a world without men, could be compatible with any ethic for men without world ? To describe the shadows of the world left by a technical one, is meant to identify idealities which cover everything with an artificial obviousness. To observe the world made by men, who themselves became shadows, is like to perceive thet they are living in a environment whose they are the products. This artificail world, instead of relieving man about the nature hostility, adds other difficulties, which the technology is only sometimes able to cope with. To theorize the shadows of the world is meant to seek the specific negativity of nihilism, which is produced by technology. Our task is to show that we can refuse the nihilism as an attitude. The philosophical hypothesis defended here is metaphysical nihilism designed as prerequisite for the refusal of any other nihilistic praxis. The philosophical work of Anders allows us to conceive an occasional philosophy as a theoretical practice, pointed out as a tragic sobriety. If to break any metaphysical idea leads to disenchant the naïve victims of generalities, this theory however does not refrain us from doing metaphysics.