The natural flora of nothern Asia includes 218 families, 1351 genera and 8130 spesies of vascular plants. About 37 % of species and 13 % of genera occur only in one or two of 70 districts. 29 genera of vascular plants occur in all 70 districts. Maximum number of districts included into the range of one species reaches 67 of 70, in 65-67 districts occur: Alopecurus aequalis, Bistorta vivipara, Chamaenerion angustifolium, Cicuta virosa, Eleocharis palustris, Epilobium palustre, Festuca rubra, Hippuris vulgaris, Juncus bufonius, Rorippa palustris and Sanguisorba officinalis.
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