Biology:Ulmus parvifolia 'Drake'
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Short description: Elm cultivar
| Ulmus parvifolia 'Drake' | |
|---|---|
 Autumnal foliage, U. parvifolia 'Drake' | |
| Species | Ulmus parvifolia |
| Cultivar | 'Drake' |
| Origin | US |
The Chinese Elm cultivar Ulmus parvifolia 'Drake' was marketed by the Monrovia Nursery of Azusa, California from 1952 to 1953.
Description
The tree has upright, spreading branches bearing dark-green leaves.[1] 'Drake' is also distinguished by having a bark that begins exfoliating at a relatively young age [1].
Pests and diseases
The species and its cultivars are highly resistant, but not immune, to Dutch elm disease, and unaffected by the Elm Leaf Beetle Xanthogaleruca luteola.[2]
Cultivation
'Drake' became the most popular form of U. parvifolia planted in the southern and western states of the United States.[3] One specimen is known to have been introduced to Europe.
Synonymy
- Ulmus 'Brea': Keeline-Wilcox Nursery, Brea, California , Cat. Winter 1952.
Accessions
- North America
- U S National Arboretum [2][no|permanent dead link|dead link}}], Washington, D.C., United States. Acc. no. 36533
- Europe
- Grange Farm Arboretum, Sutton St. James, Spalding, Lincolnshire, UK. One specimen, acc. no. 704.
Nurseries
North America
(Widely available)
References
- ↑ Green, Peter Shaw (1964). "Registration of cultivar names in Ulmus". Arnoldia (Arnold Arboretum, Harvard University) 24 (6–8): 41–80. https://archive.org/stream/arnoldiaarno_21#page/40/mode/2up/. Retrieved 16 February 2017.
- ↑ "Elm Leaf Beetle Survey". http://www.sunshinenursery.com/survey.htm.
- ↑ Dirr, M. A. (2002). Dirr's Trees and Shrubs for Warm Climates, Timber Press, Portland, Oregon, USA. ISBN:0-88192-525-X
External links
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