Willis (elm hybrid)

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Ulmus Willis

Hybrid parentage
U. pumila × U. rubra

Cultivar
Willis
Origin
USA

The hybrid cultivar Willis originated as a selection made by a Mr Minnick of Kansas simply as a 'hybrid'. Almost certainly derived from a crossing of U. pumila × U. rubra, it was originally considered U. americana × U. pumila. It was described as having a smooth grey bark, large leaves similar to U. americana, and capable of very rapid growth. Marketed by the Willis Nursery Co., Ottawa, Kansas, circa 1959, it has not been widely tested for resistance to Dutch elm disease (Santamour & Bentz, 1995).

1 Arboreta etc. accessions
2 Nurseries
3 Synonymy
4 References

[edit] Arboreta etc. accessions

None known.

[edit] Nurseries

None known.

[edit] Synonymy

None.

[edit] References

Green, P. S. (1964). Registration of cultivar names in Ulmus. Arnoldia, Vol. 24. Arnold Arboretum, Harvard University. [1]
Santamour, F. S., & Bentz, S. E. Updated checklist of elm (Ulmus) cultivars for use in North America. Journal of Arboriculture, 21(3): May, 1995.