— Only 4 native species of oaks were known in Czechoslovakia until 1974, namely Quercus cerris, Q petraea, Q pubescens and Q robur. In that year, Magic published a paper in which he quoted another 5 oak species from Slovakia. During my study in the Czech Republic, I have found, in addition to the above mentioned species, Quercus dalechampii, Q polycarpa, Q virgiliana and very rarely Q frainetto but not Q pedunculiflora. The newly discovered oak species are concentrated particularly in southern and southwestern Moravia. Quercus dalechampii / Quercus polycarpa / Quercus virgiliana Résumé — Répartition des chênes en République tchèque. Quatre espèces de chênes ont été reconnues en Tchécoslovaquie jusqu'en 1974: Quercus cerris, Q petraea, Q pubescens et Q robur. La même année, Magic publia un article dans lequel il mentionna 5 espèces supplémentaires en Slovaquie. Au cours de mon étude, j'ai reconnu d'autres espèces en république tchèque, en plus de celles déjà évoquées. Il s'agit de Quercus dalechampii, Q polycarpa, Q virgiliana, et plus rarement Q frainetto. Q pedunculiflora n'a pas été rencontré. Ces espèces récemment découvertes sont concentrées dans la partie sud et sud-ouest de la Moravie. Quercus dalechampii / Quercus polycarpa / Quercus virgiliana
A grown-up specimen of Juglans ×intermedia Carr. walnut was accidentally found in the stand of black walnut (Juglans nigra L.) in the Židlochovice Forest Enterprise in the forest district Velký Dvůr, Stand No. 224 D10. The tree was photographed, leafy shoots and fruits were sampled for later analyses. The paper brings a description of growth habit, rough bark, morphology of leaves, current year shoots and fruits. Discussed are dissimilarities from the parental species (J. nigra and J. regia L.).
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