''Ulmus'' 'Recerta' is an American
hybrid cultivar
A cultivar is a kind of Horticulture, cultivated plant that people have selected for desired phenotypic trait, traits and which retains those traits when Plant propagation, propagated. Methods used to propagate cultivars include division, root a ...
raised by the
Wisconsin Alumni Research Foundation (WARF) as selection '196-5' from seed obtained from a
Siberian Elm ''Ulmus pumila'' in
Volgograd
Volgograd,. formerly Tsaritsyn. (1589–1925) and Stalingrad. (1925–1961), is the largest city and the administrative centre of Volgograd Oblast, Russia. The city lies on the western bank of the Volga, covering an area of , with a population ...
, Russia; the male parent deduced as the
Field Elm ''Ulmus minor''.
[Maethe, H. (1985), ''Deutsche Baumschule'', Sept. 1985, 368–369.][Vermeulen, N. (2001), ''Encyclopaedia of Trees & Shrubs''. Fitzroy Dearborn, ]
Description
'Recerta' produces a straight, clean stem, supporting a rounded crown. The leaves are
elliptic, with typically acuminate tip, the blade 6–12 cm long by 3–6.5 cm broad; the margins are doubly, if bluntly, serrate.
[Götz, W. (1985). Die Ulme kehrt zurück. ''Baumschulpraxis''. Nr. 12 / 85, 504–505. Aachen-Brand: Euroflora Klette Verl., Nd
]
Image: Recerta leaf 2.jpg, Leaves
Image: Recerta bark.jpg, Bark
Pests and diseases
Tests in the USA found the cultivar to be only "somewhat resistant to
Dutch elm disease",
meanwhile evaluation in
France
France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...
by the
Institut National de la Recherche Agronomique (INRA) confirmed the tree as only "moderately resistant".
Cultivation
Serious doubts as to the tree's long term culture in Europe have been expressed.
[Heybroek, H. M. (1986), ''Tuin en Landschap'' 8(12): 19, 1986.] Although registered in 1993 as 'Recerta' by Conrad Appel KG (ceased trading 2006), of
Darmstadt
Darmstadt () is a city in the States of Germany, state of Hesse in Germany, located in the southern part of the Frankfurt Rhine Main Area, Rhine-Main-Area (Frankfurt Metropolitan Region). Darmstadt has around 160,000 inhabitants, making it the ...
, Germany, the tree is not known to have ever been in commerce.
Notable trees
A mature specimen grows in a park in the Amerbos district of north
Amsterdam
Amsterdam ( , ; ; ) is the capital of the Netherlands, capital and Municipalities of the Netherlands, largest city of the Kingdom of the Netherlands. It has a population of 933,680 in June 2024 within the city proper, 1,457,018 in the City Re ...
, planted in the early 1990s along with other elm cultivars.
References
Hybrid elm cultivar
Ulmus articles with images
Ulmus
{{Ulmaceae-stub