Ulmus × hollandica 'Dauvessei' is a very rare cultivar of unknown provenance.

Description

The branches ascend to form a broad, pyramidal crown; the leaves bear a vague resemblance to Wych Elm

Wych Elm

Ulmus glabra, the Wych elm or Scots elm, has the widest range of the European elm species, from Ireland eastwards to the Urals, and from the Arctic Circle south to the mountains of the Peloponnese in Greece; it is also found in Iran...

, but are generally smaller, rarely exceeding 10 cm long by 5 cm wide, and thinner in texture.

Cultivation

'Dauvessei' was once grown at Kew Gardens where it attained a height of 13 m. The one specimen surviving in Europe is in Brighton; the tree is grown in Australia

Australia

Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

, and in the USA, where it can be found along The Mall

National Mall

The National Mall is an open-area national park in downtown Washington, D.C., the capital of the United States. The National Mall is a unit of the National Park Service , and is administered by the National Mall and Memorial Parks unit...

 in Washington D.C. amongst Ulmus americana on either side of the Relecting Pool (2010).

Synonymy

• Ulmus campestris var. Dauvessi Hort.: Lavallée http://asaweb.huh.harvard.edu:8080/databases/botanists?id=100281, Arb. Segrez. 235, 1877.
• Ulmus montana var. Dauvessei: Nicholson, Kew Hand-List Trees and Shrubs, 2: 139, 1896.

Hybrid cultivars

'Dauvessei' was crossed with Ulmus × hollandica

Ulmus × hollandica

Ulmus × hollandica Mill. , often known simply as Dutch Elm, is a natural hybrid between Wych Elm Ulmus glabra and Field Elm Ulmus minor which commonly occurs across Europe wherever the ranges of the two parent species overlap. In England, according to the field-studies of R. H...

, U. glabra and U. minor subsp. minor in the Dutch elm breeding programme before World War II

World War II

World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

, but none of the progeny were of particular note and were discarded.

Accessions

Europe

• Brighton & Hove
  Brighton & Hove
  Brighton and Hove is a unitary authority area and city on the south coast of England. It is England's most populous seaside resort.In 1997 Brighton and Hove were joined to form the unitary authority of Brighton and Hove, which was granted city status by Queen Elizabeth II as part of the millennium...
  
   City Council, UK, NCCPG Elm Collection http://www.brighton-hove.gov.uk/index.cfm?request=c1108042, UK champion: Highleigh, Brighton, 23 m high, 76 cm d.b.h. in 1998.

Australasia

• Waite Arboretum http://www.waite.adelaide.edu.au/arboretum/, University of Adelaide
  University of Adelaide
  The University of Adelaide is a public university located in Adelaide, South Australia. Established in 1874, it is the third oldest university in Australia...
  
  , Adelaide
  Adelaide
  Adelaide is the capital city of South Australia and the fifth-largest city in Australia. Adelaide has an estimated population of more than 1.2 million...
  
  , Australia
  Australia
  Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...
  
  Details not known.