Ulmus wallichiana subsp. wallichiana
| Ulmus wallichiana subsp. wallichiana | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Rosids |
| Order: | Rosales |
| Family: | Ulmaceae |
| Genus: | Ulmus |
| Species: | Ulmus wallichiana |
| Subspecies: | U. wallichiana subsp. wallichiana |
| Trinomial name | |
| Ulmus wallichiana subsp. wallichiana Melville & Heybroek | |
Ulmus wallichiana subsp. wallichiana Melville & Heybroek was identified by Melville and Heybroek after the latter's expedition to the Himalaya in 1960.
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 6 to 13 cm long by 2.5 to 6 cm broad, elliptic-acuminate in shape, and with a glabrous upper surface, on petioles 5 to 10 mm long. The samarae are orbicular to obovate, 10 to 13 mm in diameter, 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.