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Floristical records of one fungus and ten flowering plants are presented from Hungary. We report a new occurrence of Calvatia candida in a valuable Pannonian sandy steppe habitat. Some of our floristical data present new occurrences of species that are rare in Hungary, but in the case of Orobanche minor, Minuartia viscosa, due to the low number of recent floristical data, we also try to clarify the distribution pattern of the species with data from specimens documented in the BP herbarium. The first occurrences of the rare, red-listed species Papaver hybridum was detected from the Duna-sík region. We report the first data of Orobanche minor from the Hungarian Middle Mountain Ranges, Minuartia viscosa is new for the southern part of the Mezőföld. A new record of Dactylorhiza sambucina from the Vértes Mts, which is in decline in our low-middle mountain areas, is published, an important observation from a conservation point of view. The data of Potentilla patula reported here is a new observation for the area of Cserhát-vidék. Our other data are from ruderal habitats, where we report observations of taxa that are mainly expanding but with few records in Hungary. The second Hungarian record of Senecio × helwingii is from the district of Zugló in Budapest. Erigeron sumatrensis has been found in several regions of Hungary, Euphorbia glyptosperma, Gypsophila perfoliata new occurrences were found in the border of Kecskemét. The recently suggested spreading of Medicago orbicularis is confirmed by new occurrence data from the Tihany Peninsula. [ABSTRACT FROM AUTHOR]