Abstract
New alien species for the Novosibirsk Region are reported: Corydalis solida, Crataegus chlorosarca, Erigeron strigosus,Hemerocallis lilioasphodelus, Lathyrus oleraceus, Polygonum sabulosum, Ranunculus acris (Double Acris Group), Veronica biloba. New localities of rare alien species Astragalus contortuplicatus, Cerinthe minor, Cyclachaena xanthiifolia, Galium aparine, Myosotis stricta, Scleranthus annuus, Symphyotrichum novi-belgii, Symphytum × uplandicum were noted. For each species, its range is given, the distribution in the regions of Siberia is indicated.