''Ulmus wallichiana'' var. ''tomentosa'' was identified by Melville & Heybroek after the latter's expedition to the Himalaya in 1960.

Description

The tree is very similar to ''Ulmus wallichiana'' subsp. ''wallichiana'', but distinguished by young stems and lower surfaces of leaves densely white-tomentose; the samarae are uniformly hirsute.

Pests and diseases

The species has a high resistance to the fungus ''

Ophiostoma himal-ulmi ''Ophiostoma himal-ulmi'' is a species of fungus in the family Ophiostomataceae. It is one of the causative agents of Dutch elm disease. It was first isolated around breeding galleries of scolytid beetles in the bark of ''Ulmus wallichiana'' (t ...

'' endemic to the

Himalaya The Himalayas, or Himalaya (; ; ), is a mountain range in Asia, separating the plains of the Indian subcontinent from the Tibetan Plateau. The range has some of the planet's highest peaks, including the very highest, Mount Everest. Over 100 ...

and the cause of

Dutch elm disease Dutch elm disease (DED) is caused by a member of the sac fungi (Ascomycota) affecting elm trees, and is spread by elm bark beetles. Although believed to be originally native to Asia, the disease was accidentally introduced into Americas, America ...

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.

External links

* {{Taxonbar, from=Q7879646 wallichiana var. tomentosa Flora of West Himalaya Trees of Pakistan Vulnerable plants Ulmus articles missing images Elm species and varieties