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The article contains new data on localities of new and rare adventive plants in the Tomsk Region. Hypochaeris radicata L. is not only a new species but a representative of a new genus for the flora of Siberia; Geranium pusillum L. is reported here for the first time for the Tomsk Region and constitutes the first record within the forest zone of Siberia; for 4 rare adventive species (Bidens frondosa L., Impatiens parviflora DC., Cynoglossum officinale L., Hesperis pycnotricha Borbás et Degen), new localities were noted, indicating their further distribution in the southern regions of the Tomsk Region and extending the distribution range of the species., В статье приведены новые сведения о местонахождениях новых и редких адвентивных растений в Томской области. В том числе: Hypochaeris radicata L. является не только новым видом, но представителем нового рода для флоры Сибири в целом; Geranium pusillum L. – новый вид для Томской области и первая находка в пределах лесной зоны Сибири; для 4 редких адвентивных видов (Bidens frondosa L., Impatiens parviflora DC., Cynoglossum officinale L., Hesperis pycnotricha Borbás et Degen) отмечены новые местонахождения, свидетельствующие о дальнейшем их расселении в южных районах Томской области.

The aim of the present study is to update the checklist of vascular plants endemic to Mongolia using previous checklists, publications, herbarium collections, and field observations. The revised checklist includes 102 endemic taxa (95 species, five subspecies, and two nothospecies) from 43 genera and 19 families. The majority of endemic taxa were distributed in western and central Mongolia, and high endemic species richness was identified in four phytogeographical regions, namely Mongolian Altai, Khangai, Dzungarian Gobi, and Gobi Altai, which harbor 49, 27, 20, and 16 endemic taxa, respectively. For each endemic taxon, we compiled information about growth form, conservation status (if already assessed), phytogeographical distribution, and voucher specimens. Data on each taxon’s type specimen were also collected, and the majority of the type specimens were accessioned at the LE (58 taxa), MW (20 taxa), and UBA (7 taxa) herbaria.

The paper presents distributional data for seven species new for the flora of Kazakhstan: Atriplex gardneri var. aptera (A. Nelson) S. L. Welsh. & Crompton, Cardamine hirsuta L., Carduus acanthoides L., Galega orientalis Lam., Silene cserei Baumg., Didymophysa fedtschenkoana Regel and Acinos arvensis (Lam.) Dandy. Didymophysa fedtschenkoana is a native element in the Kazakh flora; the other species should be treated as alien, expansively spreading or invasive in this part of Asia. A list of localities of the species in Kazakhstan and their habitat preferences are presented.