Hybrids
The tree's natural range in eastern England overlaps with that of Wych Elm (Ulmus glabra), the two species hybridizing to produce elms of the Ulmus × hollandica type. U. minor subsp. minor is believed to have hybridized also with Plot's Elm (Ulmus minor var. plotii) to create Ulmus × viminalis.
Read more about this topic: Ulmus Minor Subsp. minor