Hybrids
The tree's natural range generously overlaps that of Wych Elm Ulmus glabra to the north, and readily hybridizes with it to produce the so-called 'Dutch Elm' Ulmus × hollandica.
In Spain Ulmus minor has naturally hybridized with Siberian Elm U. pumila, which was introduced in the 16th century and which has spread widely since then, contributing to conservation concerns for the former species. The resulting hybrid has not yet been given a formal botanical name, though there are cultivated forms such as 'Recerta' and 'Fiorente' (see Hybrid cultivars).
- Ulmus × hollandica
- U. minor × U. pumila
Read more about this topic: Ulmus Minor