Ulmus wallichiana subsp. xanthoderma

Taxobox
status = VU
name = "Ulmus wallichiana" subsp. "xanthoderma"
regnum = Plantae
divisio = Magnoliophyta
classis = Magnoliopsida
ordo = Rosales
familia = Ulmaceae
genus = "Ulmus"
species = "Ulmus wallichiana"
trinomial = "Ulmus wallichiana" subsp. "xanthoderma"
trinomial_authority = Melville & Heybroek

"Ulmus wallichiana" subsp. "xanthoderma" Melville & Heybroek was identified by Melville and Heybroek during their expedition to the Himalaya in 1960. The tree is endemic to Afghanistan and as far west as the Kashmir.

Description

A deciduous tree growing to 30 m with a crown comprising several ascending branches. The bark of the trunk is is pale grey, coarsely furrowed longitudinally. The leaves range from 5.6 to 14 cm long by 3 to 7.5 cm broad, elliptic-acuminate in shape, and with a glabrous upper surface, on petioles 7 to 10 mm long. The samarae are orbicular to obovate, the seed central.

Pests and diseases

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

Cultivation

The tree is not known to be in cultivation in the West.

References

*Melville, R. & Heybroek, H. (1971). Elms of the Himalaya. "Kew Bulletin, Vol. 26 (1)". Kew, London.