| Summary: | New data on the occurrence of 14 vascular plant species of Cruciferae, Liliaceae, Poaceae and Rosaceae in Kazakhstan and Siberia are reported. Fritillaria leucanthta, Potentilla exuta, P. kryloviana and P.×habievii are recorded for the first time from Kazakhstan; Cardamine occulta and Sisymbrium irio – from Siberia. Erysimum amurense is a novelty for the flora of Yakutia; Cardamine hirsuta, Сynodon dactylon and Rorippa austriaca are newly found in Altai Krai; Potentilla agrimonioides is for the first time recorded from the Kalbinskiy Ridge. For Potentilla crantzii, the first reliable finding in Kazakhstan is presented, and the second locality of P. × jakovlevii, a narrow neoendemic of Altai-within-Kazakhstan, is registered. Сynodon is recorded as a new genus for the flora of the Altai Krai while occurrence of Lepidium affine in Kemerovo Province is not confirmed. For each species, a list of recorded localities and brief data on general distribution are provided supplied with morphological comments where needed. Additionally, photos of Fritillaria leucanthta and Potentilla crantzii in their natural habitat are presented along with an image of the herbarium specimen of Potentilla × jakovlevii and morphological comparison of inflorescence and spikelet of Cynodon vs. Digitaria. Представлены новые данные о распространении 14 видов из семейств Cruciferae, Liliaceae, Poaceae и Rosaceaeна территории Казахстана и Сибири. Из них Fritillaria leucanthta, Potentilla exuta, P.kryloviana и P. × habievii – новые виды для Казахстана, а Cardamine occulta и Sisymbrium irio – для Сибири. Erysimum amurense впервые указывается для Якутии; Cardamine hirsuta, Сynodon dactylon и Rorippa austriaca – для Алтайского края; Potentilla agrimonioides – для Калбинского хребта. Для Potentilla crantzii приводится первая достоверная находка в Казахстане; для узколокального неоэндемика казахстанской части Алтая P. × jakovlevii зарегистрировано второе местонахождение. Сynodon является новым родом во флоре Алтайского края, нахождение Lepidiumaffine ...
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