Ulmus wallichiana subsp. xanthoderma
Ulmus wallichiana subsp. xanthoderma | |
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Scientific classification ![]() | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Rosales |
Family: | Ulmaceae |
Genus: | Ulmus |
Species: | |
Subspecies: | U. w. subsp. xanthoderma
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Trinomial name | |
Ulmus wallichiana subsp. xanthoderma Melville & Heybroek
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Synonyms | |
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The elm Ulmus wallichiana subsp. xanthoderma was identified by Melville and Heybroek after the latter's expedition to the Himalaya in 1960.[1] The tree is of more western distribution than subsp. wallichiana, from Afghanistan to Kashmir.[2]
Description[]
A deciduous tree growing to 30 m with a crown comprising several ascending branches. The bark of the trunk is pale grey, coarsely furrowed longitudinally. The branchlets become orange- or yellow-brown, glandular at first, not hairy. The leaves range from 5.6–14 cm long by 3–7.5 cm broad, elliptic-acuminate in shape, and with a glabrous upper surface, on petioles 7–10 mm long. The inflorescence is slightly glandular, almost glabrous. The samarae are orbicular to obovate, with a few glandular hairs; the seed central.[1][2]
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.[1]
Cultivation[]
There are a few trees planted in The Netherlands.
Accessions[]
Europe[]
- Grange Farm Arboretum, Lincolnshire, UK. Acc. no. 643 (Heybroek's clone P296).
- Elm Arboretum, 1 tree planted , Nederhorst den Berg 2019, tree number: 112793
References[]
External links[]
- "Ulmus wallichiana subsp. xanthoderma K000442471". Herbarium catalogue. Board of Trustees of the Royal Botanic Gardens, Kew. Retrieved 17 October 2016.
- "Ulmus wallichiana subsp. xanthoderma K000852680". Herbarium catalogue. Board of Trustees of the Royal Botanic Gardens, Kew. Retrieved 17 October 2016.
- "Ulmus wallichiana subsp. xanthoderma K000852681". Herbarium catalogue. Board of Trustees of the Royal Botanic Gardens, Kew. Retrieved 17 October 2016.
- Ulmus
- Trees of Afghanistan
- Flora of West Himalaya
- Trees of Pakistan
- Vulnerable plants
- Plant subspecies
- Elm species and varieties