+ Crataegomespilus potsdamiensis

Two experimental graft hybrids between Mespilus germanica and the red, double-flowered Crataegus × media ‘Kermesina Plena’ were made in Potsdam, Germany in the late 20th century. They have been named ‘Diekto’ and ‘Monekto’. Both are red-flowered and show some ‘doubling’ of the flower, especially ‘Monekto’ (Bergann 1989). We have been unable to examine the original publication of the nothospecies + Crataegomespilus potsdamiensis (Bergann & Bergann 1984 fide Bergann 1989). If valid, it could in theory be used for graft hybrids between M. germanica and any C. × media clone, even though the original authors treated the hawthorn parent as a cultivar of C. monogyna. These are still little-known trees, but have been distributed by grafting in a small, non-commercial way in continental Europe.