Ulmus pseudopropinqua
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| Ulmus pseudopropinqua | ||||||||||||||
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| Ulmus pseudopropinqua Wang & Li |
Ulmus pseudopropinqua Wang & Li is a small deciduous tree found only in the northeasternmost province of Heilongjiang in China, where it grows to a height of 10 m. Its wing-less twigs bear small ovate to subovate leaves, < 5.5 cm long by 2.5 cm broad. The wind-pollinated petal-less flowers are produced on second-year shoots in April; the variably-shaped samarae < 25 mm long by 20 mm wide ripen in June [1].
The tree is one of a range of rare Chinese elms currently under evaluation as landscape plants at the Morton Arboretum, Illinois; it has already been found to be unaffected by elm leaf beetles [2].
The tree is not known to have been introduced to Europe or Australasia. There are no known cultivars of this taxon, nor is it known to be available from any nurseries beyond the USA.
[edit] Arboreta etc. accessions
- North America
- Morton Arboretum, no details available.
[edit] Nurseries
- North America
[edit] References
- ^ Fu, L., Xin, Y. & Whittemore, A. (2002). Ulmaceae, in Wu, Z. & Raven, P. (eds) Flora of China, Vol. 5 (Ulmaceae through Basellaceae). Science Press, Beijing, and Missouri Botanical Garden Press, St. Louis, USA. [1]
- ^ Ware, G. (1995). Little-known elms from China: landscape tree possibilities. Journal of Arboriculture, (Nov. 1995). International Society of Arboriculture, Champaign, Illinois, USA. [2]
