With the help of flow-cytometric analysis of nuclear DNA content and morphology, we establish the presence in the Netherlands of two taxa of the Dryopteris affinis complex: diploid D. affinis subsp. affinis, triploid D. affinis subsp. borreri, and the hybrids D ×complexa (tetraploid) and D. ×critica (pentaploid).

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Gorteria Dutch Botanical Archives

CC BY 3.0 NL ("Naamsvermelding")

Naturalis Biodiversity Center

P. Hovenkamp, B. Hendrikx, H. Roskam, & W. de Winter. (2018). Het Dryopteris affinis-complex in Nederland. Gorteria Dutch Botanical Archives, 40(1), 42–54.