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The Poláchovy Stráně -Výří Skály Natural Monument is a well-known but insuffi ciently explored locality of calciphilous and thermophilous fl ora in the submontane landscape of northern Moravia. A total of 305 vascular plant taxa were found during the botanical survey, out of which 20 are included in the national red list of endangered species. The occurrence of Cypripedium calceolus, Gentiana cruciata, Moneses unifl ora and Neotinea ustulata is of particular importance. From a phytogeographical point of view, the area is noteworthy for co-occurrence of some thermophilous and montane species, both growing here on their local elevation limits. Vegetation of the natural monument consists mostly of seminatural or artifi cial woods, with only remnants of valuable beech and hornbeam forests. Even cultivated spruce forest however appeared to be suitable for some endangered species, including several calciphytes. Mesophilous meadows and pastures also signifi cantly contribute to the species richness of the natural monument, which is a result of an ongoing traditional farming. [ABSTRACT FROM AUTHOR]

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This article summarizes historical and recent records of Field Cudweed in Olomouc. In the urban area, this species is bounded to permanently disturbed habitats, as railways, tram lines and city grasslands. Its populations may be endangered by application of weedkillers or intensive mowing of the grasslands. The most promising populations occur in the botanical garden and in Fort Radikov. New findings of the species in the city may be expected. [ABSTRACT FROM AUTHOR]