Ulmus lanceifolia

Ulmus lanceifolia
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Rosales
Family: Ulmaceae
Genus: Ulmus
Species: U. lanceifolia
Binomial name
Ulmus lanceifolia
Roxburgh ex Wall.
Synonyms
  • Ulmus hookeriana Planch.
  • Ulmus lancaeafolia Roxburgh & Wall.
  • Ulmus lancifolia Roxburgh
  • Ulmus tonkinensis Gagnep. (where found in China and Vietnam).

Ulmus lanceifolia Roxburgh, ex Wall. , occasionally known as the Vietnam Elm, is a very large tree endemic to a wide area of southern Asia. Its range extends southeast and eastwards from Darjeeling in the Himalaya, through Bangladesh, southern China, Myanmar (formerly Burma), Thailand, Laos, Vietnam and on discontinuously into Indonesia, straddling the Equator in Sumatra and Celebes.

Description

Ulmus lanceifolia can reach a maximum height of 45 m, placing it on a par with the English Elm, but with pendulous branches; the bark of the trunk exfoliates in thin scales. The leaves, borne on wing-less branchlets, are narrow, generally lanceolate, < 10 × 3.5 cm, and thick. The tree is deciduous in the north of its range, where it can occur at altitudes of up to 2500 m, but evergreen in the tropics. Given the latitudinal range, there is inevitably a substantial variation in its flowering time, beginning in October in the north, but advancing to FebruaryMarch in the south. The obovate samarae are 1230 mm long by 1124 mm broad.[1][2]

Pests and diseases

U. lanceifolia was found to be among the least suitable elms for feeding and reproduction by the adult elm leaf beetle Xanthogaleruca luteola [3] and feeding by the Japanese Beetle Popillia japonica [4] in the USA.

Cultivation

Not cold-hardy, the species is very rare in cultivation; specimens introduced to the Netherlands from the Himalaya by Heybroek in the 1960s all perished.[5]

Accessions

Europe

References

  1. 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.
  2. Melville, R. & Heybroek, H. M. (1971). The Elms of the Himalaya. Kew Bulletin Vol. 26 (1). Royal Botanic Garden, Kew, London.
  3. Miller, F. and Ware, G. (2001). Resistance of Temperate Chinese Elms (Ulmus sp.) to Feeding of the Adult Elm Leaf Beetle (Coleoptera: Chrysomelidae). Journal of Economic Entomology 94 (1): 162-166. 2001. Entom. Soc. of America.
  4. Miller, F., Ware, G. and Jackson, J. (2001). Preference of Temperate Chinese Elms (Ulmus sp.) for the Feeding of the Japanese Beetle (Coleoptera: Scarabaeidae). Journal of Economic Entomology 94 (2). 445-448. 2001. Entom. Soc. of America.
  5. Heybroek, H. M., Goudzwaard, L, Kaljee, H. (2009). Iep of olm, karakterboom van de Lage Landen (:Elm, a tree with character of the Low Countries). KNNV, Uitgeverij. ISBN 9789050112819
This article is issued from Wikipedia - version of the Tuesday, May 03, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.