Ulmus bergmanniana var. lasiophylla C. K. Schneid. is endemic to China

China

Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

, on mountain slopes between 2100 m and 2900 m elevation in the provinces of Gansu

Gansu

' is a province located in the northwest of the People's Republic of China.It lies between the Tibetan and Huangtu plateaus, and borders Mongolia, Inner Mongolia, and Ningxia to the north, Xinjiang and Qinghai to the west, Sichuan to the south, and Shaanxi to the east...

, Shaanxi

Shaanxi

' is a province in the central part of Mainland China, and it includes portions of the Loess Plateau on the middle reaches of the Yellow River in addition to the Qinling Mountains across the southern part of this province...

, north-west Sichuan

Sichuan

' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...

, south-east Xizang (formerly Tibet), and north-west Yunnan

Yunnan

Yunnan is a province of the People's Republic of China, located in the far southwest of the country spanning approximately and with a population of 45.7 million . The capital of the province is Kunming. The province borders Burma, Laos, and Vietnam.Yunnan is situated in a mountainous area, with...

.

Description

The tree is distinguished by Fu et al. (2002) as having "Leaf blade adaxially with densely curved pubescence. Flowers and fruits February - April".

Cultivation

Var. lasiophylla is cold hardy; in artificial freezing tests at the Morton Arboretum

Morton Arboretum

The Morton Arboretum, in Lisle, Illinois, covers 1,700 acres and is made up of gardens of various plant types and collections of trees from specific taxonomical and geographical areas. It includes native woodlands and a restored Illinois prairie. The Arboretum has over 4,100 different species of...

  the LT50 (temp. at which 50% of tissues die) was found to be - 27.7 °C

Celsius

Celsius is a scale and unit of measurement for temperature. It is named after the Swedish astronomer Anders Celsius , who developed a similar temperature scale two years before his death...

. There are no known 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...

s of this taxon, nor is it known to be in commerce.

North America

• Chicago Botanic Garden
  Chicago Botanic Garden
  Located at 1000 Lake Cook Road, Glencoe, Illinois, USA, the Chicago Botanic Garden is a living plant museum situated on nine islands featuring 24 display gardens and surrounded by four natural habitats: McDonald Woods, Dixon Prairie, Skokie River Corridor, and Lakes and Shores. The Garden is open...
  
  . No accession details; planted in West Collections Area.
• Morton Arboretum
  Morton Arboretum
  The Morton Arboretum, in Lisle, Illinois, covers 1,700 acres and is made up of gardens of various plant types and collections of trees from specific taxonomical and geographical areas. It includes native woodlands and a restored Illinois prairie. The Arboretum has over 4,100 different species of...
  
  . Acc. no. 45-95. Collected from the wild at an unrecorded site in China.
• U S National Arboretum
  United States National Arboretum
  The United States National Arboretum is an arboretum in Washington, D.C., operated by the United States Department of Agriculture's Agricultural Research Service as a division of the Henry A. Wallace Beltsville Agricultural Research Center...
  
   http://www.usna.usda.gov/index.htm, Washington, D.C.
  Washington, D.C.
  Washington, D.C., formally the District of Columbia and commonly referred to as Washington, "the District", or simply D.C., is the capital of the United States. On July 16, 1790, the United States Congress approved the creation of a permanent national capital as permitted by the U.S. Constitution....
  
  , USA. Acc. nos. 76218, 68978.

Europe

• Grange Farm Arboretum
  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....
  
   http://www.thegardeningwebsite.co.uk/grange-farm-plants-speciality-rare-trees-shrubs-i411.html, Sutton St James
  Sutton St James
  Sutton St James is a village and civil parish in the South Holland district of Lincolnshire, England, about south west of Long Sutton.Lying in the Lincolnshire Fens, Sutton St James did not exist at the time of Domesday Book of 1086...
  
  , Spalding
  Spalding, Lincolnshire
  Spalding is a market town with a population of 30,000 on the River Welland in the South Holland district of Lincolnshire, England. Little London is a hamlet directly south of Spalding on the B1172 road....
  
  , Lincs.
  Lincolnshire
  Lincolnshire is a county in the east of England. It borders Norfolk to the south east, Cambridgeshire to the south, Rutland to the south west, Leicestershire and Nottinghamshire to the west, South Yorkshire to the north west, and the East Riding of Yorkshire to the north. It also borders...
  
  , UK. Acc. no. 825.
• Royal Botanic Garden Edinburgh
  Royal Botanic Garden Edinburgh
  The Royal Botanic Garden Edinburgh is a scientific centre for the study of plants, their diversity and conservation, as well as a popular tourist attraction. Originally founded in 1670 as a physic garden to grow medicinal plants, today it occupies four sites across Scotland — Edinburgh,...
  
  , Scotland
  Scotland
  Scotland is a country that is part of the United Kingdom. Occupying the northern third of the island of Great Britain, it shares a border with England to the south and is bounded by the North Sea to the east, the Atlantic Ocean to the north and west, and the North Channel and Irish Sea to the...
  
  . Acc. no. 19933397. Wild collected in Kunming
  Kunming
  ' is the capital and largest city of Yunnan Province in Southwest China. It was known as Yunnan-Fou until the 1920s. A prefecture-level city, it is the political, economic, communications and cultural centre of Yunnan, and is the seat of the provincial government...
  
  , China, by Gothenburg Expedition.