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

Cultivar

A cultivar'Cultivar has two meanings as explained under Formal definition. When used in reference to a taxon, the word does not apply to an individual plant but to all those plants sharing the unique characteristics that define the cultivar. is a plant or group of plants selected for desirable...

 raised by the Wisconsin Alumni Research Foundation

Wisconsin Alumni Research Foundation

The Wisconsin Alumni Research Foundation is the nonprofit technology transfer office of the University of Wisconsin–Madison. It is a significant source of research support, independent of federal grants...

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

Hokkaido

, formerly known as Ezo, Yezo, Yeso, or Yesso, is Japan's second largest island; it is also the largest and northernmost of Japan's 47 prefectural-level subdivisions. The Tsugaru Strait separates Hokkaido from Honshu, although the two islands are connected by the underwater railway Seikan Tunnel...

, Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

, in the late 1950s .

Cultivation

Several examples are known to survive in Wisconsin

Wisconsin

Wisconsin is a U.S. state located in the north-central United States and is part of the Midwest. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. Wisconsin's capital is...

, notably one in the garden of the late Eugene Byron Smalley

Eugene Byron Smalley

Professor Eugene Byron Smalley 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 disease Assembling seeds from around the northern hemisphere, Smalley developed resistant strains of elms which...

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

Darmstadt

Darmstadt is a city in the Bundesland of Hesse in Germany, located in the southern part of the Rhine Main Area.The sandy soils in the Darmstadt area, ill-suited for agriculture in times before industrial fertilisation, prevented any larger settlement from developing, until the city became the seat...

, Germany

Germany

Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

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