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I H helix i and I H hibernica i share invasive characteristics, such as their evergreen leaves, persistence, and vegetative capabilities, but there are important ecological differences between the two species. Although both species are known to be problematic outside their natural ranges, invasive ivy populations consist more often of I H hibernica i than I H helix i , especially in forests (Clarke I et al i . 2006; Green I et al i . 2013). Triploid ivies have been found in co-occurring alien populations of I H helix i and I H hibernica i , suggesting they can hybridize, but to date no triploids have been found in Europe (Green I et al i . 2013). [Extracted from the article]

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