- Ulmus 'Pitteurs Pendula'
'Pitteurs Pendula' was listed by C. de Vos in "Handboek" Supplement 16,
1890 , as "Ulmus pitteursii pendula". However, Dr.Hans M. Heybroek , former head of theDorschkamp Research Institute atWageningen , has identified the tree as "Zelkova × verschaffeltii ".References
*Green, P. S. (1964). Registration of cultivar names in Ulmus. "Arnoldia", Vol. 24. Arnold Arboretum, Harvard University. [http://arnoldia.arboretum.harvard.edu/pdf/articles/1605.pdf]
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