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Subspecies of tree From Wikipedia, the free encyclopedia
Ulmus wallichiana subsp. wallichiana was identified by Melville and Heybroek after the latter's expedition to the Himalaya in 1960.[1]
Ulmus wallichiana subsp. wallichiana | |
---|---|
Scientific 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 |
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 6–13 cm long by 2.5–6 cm broad, elliptic-acuminate in shape,[2] and with a glabrous upper surface, on petioles 5–10 mm long. The samarae are orbicular to obovate, 10–13 mm in diameter, on 5 mm pedicels, the seed central.[1]
The tree has a high resistance to the fungus Ophiostoma himal-ulmi endemic to the Himalayas and the cause of Dutch elm disease there.[1]
The tree is not known to be in cultivation beyond the Himalaya.
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