The Dutch hybrid

cultivar A cultivar is a type of cultivated plant that people have selected for desired traits and when propagated retain those traits. Methods used to propagate cultivars include: division, root and stem cuttings, offsets, grafting, tissue culture ...

''Ulmus'' 'Dodoens' was derived from a selfed seedling of a crossing of the Exeter Elm ''Ulmus'' 'Exoniensis' with the Himalayan Elm ''

Ulmus wallichiana ''Ulmus wallichiana'' Planch., the Himalayan elm, also known as the Kashmir elm and Bhutan elm, is a mountain tree ranging from central Nuristan in Afghanistan, through northern Pakistan and northern India to western Nepal at elevations of 800& ...

'' at the Dorschkamp Research Institute for Forestry & Landscape Planning,

Wageningen Wageningen () is a municipality and a historic city in the central Netherlands, in the province of Gelderland. It is famous for Wageningen University, which specialises in life sciences. The municipality had a population of in , of which many ...

. The tree was one of several cultivars prepared for release in 1970, but delayed by the outbreak of the second, far more aggressive strain 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 America, Europe ...

Description

A fast-growing tree with upright branches. The generally

ovate Ovate may refer to: * Ovate (egg-shaped) leaves, tepals, or other botanical parts *Ovate, a type of prehistoric stone hand axe *Ovates, one of three ranks of membership in the Welsh Gorsedd *Vates In modern English, the nouns vates () and ova ...

leaves are dark-green, glabrescent, < 14 cm in length by 10 cm broad, with a pronounced

acuminate The following is a list of terms which are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (a single leaf blade or lamina) or compound (with several leaflets). The edge of the leaf may be regular ...

apex. Image:Dodoensleaves.jpg, 'Dodoens' leaves Image:Ulmus 'Dodoens' with DED.jpg, 'Dodoens' with DED, Horsea Island, UK File:Châlons - petit jard (56).JPG, 'Dodoens',

Châlons-en-Champagne Châlons-en-Champagne () is a city in the Grand Est region of France. It is the capital of the department of Marne, despite being only a quarter the size of the city of Reims. Formerly called Châlons-sur-Marne, the city was officially renam ...

, Marne

Pests and diseases

'Dodoens' has moderately good resistance to

, rated 4 out of 5.Heybroek, H. M., Goudzwaard, L, Kaljee, H. (2009). ''Iep of olm, karakterboom van de Lage Landen'' (:Elm, a tree with character of the Low Countries). KNNV, Uitgeverij.

Cultivation

Eventually released in 1973, sales in the Netherlands dwindled from a peak of almost 16,000 in 1979 to 600 in 2004. Although still commercially available in Europe, the tree is no longer recommended for planting wherever the disease remains prevalent. Among plantings in the UK is an avenue of 'Dodoens', planted at 12 years old in 2011, lining the path along the

River Ribble The River Ribble runs through North Yorkshire and Lancashire in Northern England. It starts close to the Ribblehead Viaduct in North Yorkshire, and is one of the few that start in the Yorkshire Dales and flow westwards towards the Irish Sea ...

in Miller Park, Preston. 'Dodoens' was originally propagated by grafting onto ''U. glabra'' rootstocks, which has proven an unsatisfactory combination in the Netherlands, leading to graft failures in maturity. 'Dodoens' is now grown on its own roots or occasionally on ''U.'' 'Stavast'; trees grown by the latter method were planted in the

Wijdemeren City Council Wijdemeren () is a municipality in the Netherlands, in the province of North Holland, on the western border of the Gooi region. Wijdemeren contains many lakes. In the north(east) ''Spiegelplas'' and ''Ankeveense Plassen'', in the (south)west ''Loo ...

Elm collection in 2015. 'Dodoens' was included in trial

in

Canberra Canberra ( ) is the capital city of Australia. Founded following the federation of the colonies of Australia as the seat of government for the new nation, it is Australia's largest inland city and the eighth-largest city overall. The ci ...

, Australia, started in 1988, but has not thrived in that environment, although it prospers further south in the Benalla Botanic Gardens. It is not known to have been commercially released in North America although it was evaluated at the

Iowa State University Iowa State University of Science and Technology (Iowa State University, Iowa State, or ISU) is a public land-grant research university in Ames, Iowa. Founded in 1858 as the Iowa Agricultural College and Model Farm, Iowa State became one of th ...

in the early 1970s where it soon perished, unable to tolerate the very cold winters.Gibbs, J. N., Brasier, C. M., McNabb Jnr., H.S., and Heybroek, H. M. (1975). Further studies on the pathenogenicity in Ceratocystis ulmi. ''Europ. Journ. Forest. Path.'' 5 (3): 161-174

Notable trees

The UK TROBI Champion grows at the

Westonbirt Arboretum Westonbirt, The National Arboretum is an arboretum in Gloucestershire, England, about southwest of the town of Tetbury. Managed by Forestry England, it is perhaps the most important and widely known arboretum in the United Kingdom. Planted ...

; planted in 1980, the tree measured 20 m high by 47 cm

d.b.h. Diameter at breast height, or DBH, is a standard method of expressing the diameter of the trunk or bole of a standing tree. DBH is one of the most common dendrometric measurements. Tree trunks are measured at the height of an adult's breast, ...

in 2009.Johnson, O. (2011). ''Champion Trees of Britain & Ireland'', p.169. Kew Publishing, Kew, London. .

Etymology

The cultivar is named for the 16th-century Flemish physician and botanist

Rembert Dodoens Rembert Dodoens (born Rembert Van Joenckema, 29 June 1517 – 10 March 1585) was a Flemish physician and botanist, also known under his Latinized name Rembertus Dodonaeus. He has been called the father of botany. Life Dodoens was born Rember ...

Accessions

North America

United States National Arboretum The United States National Arboretum is an arboretum in northeast Washington, D.C., operated by the United States Department of Agriculture's Agricultural Research Service. It was established in 1927 by an act of Congress after a campaign by USDA ...

, Washington D.C., US. Acc. no. Q28833 (quarantine)

Europe

* Arboretum de La Petite Loiteriebr>
Monthodon, France. No details available *

Brighton & Hove Brighton and Hove () is a city and unitary authority in East Sussex, England. It consists primarily of the settlements of Brighton and Hove, alongside neighbouring villages. Often referred to synonymously as Brighton, the City of Brighton a ...

City Council, UK.

NCCPG Plant Heritage, formerly known as the National Council for the Conservation of Plants and Gardens (NCCPG), is a botanical conservation organisation in the United Kingdom and a registered charity. It was founded in 1978 to combine the talents of bot ...

Elm Collection. 1 large tree at Stanmer Park Arboretum, planted 1982. Many trees planted around the city. *

Grange Farm Arboretum The Grange Farm Arboretum is a small private arboretum comprising 3 hectares accommodating over 800 trees, mostly native and ornamental species or cultivars, notably oaks, ashes, walnuts and elms, growing on a calcareous loam.Ostler, J. (2009) ...

, Sutton St. James, Spalding, Lincs., UK. Acc. no. 820. *

Royal Botanic Gardens Kew Royal Botanic Gardens, Kew is a non-departmental public body in the United Kingdom sponsored by the Department for Environment, Food and Rural Affairs. An internationally important botanical research and education institution, it employs 1,100 ...

, UK. Acc. nos. 1980-730, 2000-2071, 2001–839. *

Sir Harold Hillier Gardens The Sir Harold Hillier Gardens is an arboretum comprising 72 hectares (180 acres) accommodating over 42,000 trees and shrubs in about 12,000 taxa, notably a collection of oaks, camellia, magnolia and rhododendron. The Gardens are located north ...

, UK. Acc. nos. 1982:4060, 1993:1249. *

br>
Tetbury, Glos., UK. Acc. no. 1980/156. *

, Netherlands. Elm Collection, planted ~1980. Planted mainly in Nederhorst den Berg and Ankeveen.

Australasia

* Royal Botanic Gardens Victoria (Melbourne), AustraliaRBGV (Melbourne) Elm list

References

{{Elm species, varieties, hybrids, hybrid cultivars and species cultivars , state=collapsed Hybrid elm cultivar Ulmus articles with images Ulmus