Ulmus elongata

Taxobox
status = VU | status_system = IUCN2.3
name = "Ulmus elongata"
regnum = Plantae
divisio = Magnoliophyta
classis = Magnoliopsida
ordo = Rosales
familia = Ulmaceae
genus = "Ulmus"
species = "U. elongata"
binomial = "Ulmus elongata"
binomial_authority = L. K. Fu & C. S. Ding

"Ulmus elongata" L. K. Fu & C. S. Ding is a medium-sized deciduous tree endemic to broadleaved forests in the eastern provinces of China.

Description

The tree grows to a height of < 30 m, the trunk < 0.8 m d.b.h. 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, < 25 mm in length, on stalks < 22 mm long, and appear in March 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. ISBN-10: 1930723407 [http://flora.huh.harvard.edu/china/PDF/PDF05/Ulmus.pdf] ] .

Pests and diseases

No information available.

Cultivation

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, but it has not proven hardy and no longer survives there Ware, G. (1995). Little-known elms from China: landscape tree possibilities. "Journal of Arboriculture", (Nov. 1995). International Society of Arboriculture, Champaign, Illinois, USA.] [http://www.ces.ncsu.edu/fletcher/programs/nursery/metria/metria8/m87.pdf] . It is not known to have been introduced to Europe or Australasia, and there are no known cultivars.

References