Tags: Cultivar (Cultivated Variety).
Ulmus × hollandica Mill. often known simply as Dutch Elm is a natural hybrid between Wych Elm Ulmus glabra and Field Elm Ulmus minor which commonly occurs across Europe wherever the ranges of the two parent species overlap. In England according to the field-studies of R. H. Richens The largest area [of hybridization] is a band extending across Essex from the Hertfordshire border to southern Suffolk. The next largest is in northern Bedfordshire and adjoining parts of Northamptonshire.