Ulmus parvifolia 'Sempervirens'
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| Ulmus parvifolia | |
|---|---|
| Details | |
| Cultivar | 'Sempervirens' |
| Origin | USA |
The Chinese Elm Ulmus parvifolia cultivar 'Sempervirens' is an American introduction, commonly known by the synonym 'Evergreen', and may also be in synonymy for U. parvifolia 'Pendens'.
Description
Semi-evergreen to evergreen depending on climate, it is described as having a rounded crown and gracefully arching branches bearing deep-green foliage.
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 .
Cultivation
The tree was first listed by Bailey & Bailey in Hortus Second, 747, 1941,[1] and remains in commercial cultivation in the USA. It is not known to be in cultivation in Europe or Australasia.
Synonymy
- Ulmus parvifolia 'Evergreen': Plant Buyer's Guide, ed. 5, 253, 1949.
- Ulmus parvifolia 'Pendens', possible synonym.
- Ulmus parvifolia sempervirens 'True Green': Monrovia Nursery Catalogue, 1971.
Accessions
North America
- Bartlett Tree Experts, North Carolina. Acc. no. 1451
- Brooklyn Botanic Garden , New York. Acc. no. X00486.
Nurseries
North America
- C J Growers, San Diego, California
- ForestFarm , Williams, Oregon (as 'Evergreen').
- Monrovia Nurseries , Azusa, California
References
- ↑ Green, P. S. (1964). Registration of cultivar names in Ulmus. Arnoldia, Vol. 24. Arnold Arboretum, Harvard University.
External links
- http://www.ces.ncsu.edu/depts/hort/consumer/factsheets/trees-new/cultivars/ulmus_parvifolia.htm Ulmus parvifolia cultivar list.
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