The

Japanese Elm Japanese elm is a common name for several plants and may refer to: * ''Ulmus davidiana'' var. ''japonica'' *''Zelkova serrata ''Zelkova serrata'' (Japanese zelkova, Japanese elm or keyaki or keaki; ja, 欅 (ケヤキ) keyaki /槻 (ツキ) tsu ...

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 davidiana'' var. ''japonica'' 'Reseda' is an American

raised by the

Wisconsin Alumni Research Foundation The Wisconsin Alumni Research Foundation is the independent nonprofit technology transfer organization serving the University of Wisconsin–Madison and Morgridge Institute for Research. It provides significant research support, granting tens ...

(WARF) as clone no. 43–8. 'Reseda' was grown from seed sent from

Hokkaido is Japan's second largest island and comprises the largest and northernmost prefecture, making up its own region. The Tsugaru Strait separates Hokkaidō from Honshu; the two islands are connected by the undersea railway Seikan Tunnel. The la ...

, Japan, in the late 1950s. Although not released in its own right, it was destined to become the female parent of the highly successful hybrid cultivars 'New Horizon' and 'Rebona'.

Description

The leaves and fruit are similar to the species. The species does not sucker from roots.

Pests and diseases

'Reseda' has a moderate resistance to

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 ...

Cultivation

Several examples are known to survive in

Wisconsin Wisconsin () is a state in the upper Midwestern United States. Wisconsin is the 25th-largest state by total area and the 20th-most populous. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake M ...

, notably one in the garden of the late

Eugene Byron Smalley Professor Eugene Byron Smalley (1926–2002) was an American plant pathologist. Smalley joined the University of Wisconsin-Madison in 1957 with the specific aim of finding a way to control Dutch elm diseaseBalousek, M. (2002). Dutch elm disease exp ...

. Specimens of the clone were sent from Wisconsin to Conrad Appel KG, 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 th ...

, Germany, which named the tree 'Reseda', but ultimately did not market the tree owing to its only moderate resistance to DED. NB: The tree was later confused with a pendulous form of ''

Ulmus pumila ''Ulmus pumila'', the Siberian elm, is a tree native to Asia. It is also known as the Asiatic elm and dwarf elm, but sometimes miscalled the 'Chinese Elm' (''Ulmus parvifolia''). ''U. pumila'' has been widely cultivated throughout Asia, Nor ...

'' in Germany, and specimens so misnamed may still survive there.

Accessions

Not known.

References

Japanese elm cultivar Ulmus articles missing images Ulmus {{Ulmaceae-stub