Ulmus wallichiana subsp. wallichiana

Ulmus wallichiana subsp. wallichiana was identified by Melville and Heybroek after the latter's expedition to the Himalaya in 1960.

Ulmus wallichiana subsp. wallichiana
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Rosales
Family: Ulmaceae
Genus: Ulmus
Species:
Subspecies:
U. w. subsp. wallichiana
Trinomial name
Ulmus wallichiana subsp. wallichiana

Description

A deciduous tree growing to 30 m with a crown comprising several ascending branches. The bark of the trunk is grey-brown, furrowed longitudinally. The leaves range from 613 cm long by 2.56 cm broad, elliptic-acuminate in shape, and with a glabrous upper surface, on petioles 510 mm long. The samarae are orbicular to obovate, 1013 mm in diameter, on 5 mm pedicels, the seed central.

Pests and diseases

The tree has a high resistance to the fungus Ophiostoma himal-ulmi endemic to the Himalayas and the cause of Dutch elm disease there.

Cultivation

The tree is not known to be in cultivation beyond the Himalaya.

References

  • Melville, R. & Heybroek, H. (1971). Elms of the Himalaya. Kew Bulletin, Vol. 26 (1). Kew, London.
  • "Ulmus wallichiana subsp. wallichiana K000852684". Herbarium catalogue. Board of Trustees of the Royal Botanic Gardens, Kew. Retrieved 17 October 2016.
  • "Ulmus wallichiana subsp. wallichiana K000852685". Herbarium catalogue. Board of Trustees of the Royal Botanic Gardens, Kew. Retrieved 17 October 2016.
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