Definitions for ulmus hollandica
This page provides all possible meanings and translations of the word ulmus hollandica
Dutch elm, Ulmus hollandica(noun)
any of various hybrid ornamental European shade trees ranging from dwarf to tall
Ulmus × hollandica
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. Comparable zones occur in Picardy and Cotentin in northern France". F1 hybrids between Wych and Field Elm are fully fertile, but produce widely variant progeny. Many also inherit the suckering habit of their Field Elm parent. Both Richens and Rackham noted that examples in the East Anglian hybridization zone were sometimes pendulous in form. A surviving mature U. × hollandica at Actons Farm, Sawbridgeworth, Hertfordshire - if it was not, as has been suggested, a seedling of Vegeta from the local Rivers Nursery - is a case in point. U. × hollandica hybrids, natural and artificial, have been widely planted elsewhere by man.
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