Figure 7. Number of alien plants firstly recorded in the wild of Europe after 1950, per main Family and associated introduction pathways.

Number of alien plants firstly recorded in the wild after 1950, given per main Family and associated to the relevant CBD subcategory introduction pathways, provided for taxa alien to Europe (A) and taxa alien in Europe (B). Taxa that were linked to more than one pathway were given a value of 1/k for each of the k associated pathways so that the overall contribution of each taxon to the total number of new arrivals was always 1.