Occurrence and fertility of feral hybrid barberry Berberis ×ottawensis (Berberidaceae) in Connecticut and Massachusetts.

Publication Type:Journal Article
Year of Publication:2013
Authors:B. A. Connolly
Secondary Authors:G. J. Anderson
Tertiary Authors:M. H. Brand
Keywords:Berberis ×ottawensis, Berberis thunbergii, Berberis vulgaris, hybrid, hybridization, invasive plants

Berberis ×ottawenis is the hybrid of B. vulgaris (common barberry) and B. thunbergii (Japanese barberry). In the wild, this interspecific taxon appears to have been largely overlooked. Here, we report that this hybrid is relatively widespread in Connecticut and Massachusetts. Furthermore, we present evidence that the hybrid individuals are capable of producing some viable seed and pollen.

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