Ulmus elongata
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| iUlmus elongata | ||||||||||||||
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| Ulmus elongata Fu & Ding |
Ulmus elongata is a medium-sized deciduous tree endemic to broadleaved forests in the eastern provinces of China. It grows to a height of < 30 m, the trunk < 0.8 m d.b.h (diameter at breast height). The bark is a brownish grey, and exfoliates in flakes. The leaves are < 20 cm long, narrowly elliptic with an acuminate apex and borne on twigs that occasionally feature corky wings. The wind-pollinated petal-less flowers appear on the second-year twigs in February. The samarae are distinctively shuttle-shaped, up to 25 mm in length, on stalks < 22 mm long, and appear in March.
The species was virtually unknown in the West until it was introduced to the Morton Arboretum, Illinois in the 1990s as part of an evaluation of Chinese elms for landscape use. Its performance in the trials is not yet (2006) known. It is also grown at the Denver Botanic Gardens, but is not known to be in cultivation in Europe. In its native land, U. elongata is now considered rare and endangered.
[edit] References
- Fu, L. & Jin J. (eds). (1992). China Red Data Book. Rare and endangered plants. Vol. 1. Science Press, Beijing.
- 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].
