The results of the study of adventive species of Caprifoliaceae Juss. S.L. on the territory of the Northwest European part of Russia are presented. At present, 6 wild and 16 adventive species from this family are found on the territory of St. Petersburg and Leningrad oblast. An analysis of adventive species according to the degree of naturalization from appearance of self-sowings around plantings (first stage of naturalization) until entering the natural plant communities (last stage) is carried out.
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A. V. Byalt (2011) studied this question.
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