Ulmus elongata
Encyclopedia
Ulmus elongata L. K. Fu & C. S. Ding , also known as the Long Raceme Elm in the USA, is a medium-sized deciduous
tree endemic to broadleaved forests in the eastern provinces of China
.
. The bark is a brownish grey, and exfoliates in flakes.
The coarse leaves are < 20 cm long, narrowly elliptic
with an acuminate apex and borne on twigs that occasionally feature corky wings. The wind-pollinated apetalous flowers appear on the second-year twigs in February. The samarae
are distinctively shuttle-shaped, < 25 mm in length, on stalks < 22 mm long, and appear in March .
, Illinois
, in the 1990s as part of an evaluation of Chinese elms for landscape use.
http://www.ces.ncsu.edu/fletcher/programs/nursery/metria/metria8/m87.pdf. Some of the seedlings raised at the Morton Arboretum were donated to the U S National Arboretum
(USNA) in Washington, where they have prospered. No examples are known to grow in Europe; cuttings sent by the USNA to the Bonte Hoek nursery in Glimmen
, Netherlands
, in 2010 failed to root. The species is not known in Australasia
. U. elongata is not known to be in commerce, and there are no known cultivar
s.
Deciduous
Deciduous means "falling off at maturity" or "tending to fall off", and is typically used in reference to trees or shrubs that lose their leaves seasonally, and to the shedding of other plant structures such as petals after flowering or fruit when ripe...
tree endemic to broadleaved forests in the eastern provinces of 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...
.
Description
The tree grows to a height of < 30 m, the trunk < 0.8 m d.b.hDiameter at breast height
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....
. The bark is a brownish grey, and exfoliates in flakes.
The coarse leaves are < 20 cm long, narrowly elliptic
Leaf shape
In botany, leaf shape is characterised with the following terms :* Acicular : Slender and pointed, needle-like* Acuminate : Tapering to a long point...
with an acuminate apex and borne on twigs that occasionally feature corky wings. The wind-pollinated apetalous flowers appear on the second-year twigs in February. The samarae
Samara (fruit)
A samara is a type of fruit in which a flattened wing of fibrous, papery tissue develops from the ovary wall. A samara is a simple dry fruit and indehiscent . It is a winged achene...
are distinctively shuttle-shaped, < 25 mm in length, on stalks < 22 mm long, and appear in March .
Cultivation
The species was virtually unknown in the West until it was introduced to the Morton ArboretumMorton 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...
, Illinois
Illinois
Illinois is the fifth-most populous state of the United States of America, and is often noted for being a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal,...
, in the 1990s as part of an evaluation of Chinese elms for landscape use.
http://www.ces.ncsu.edu/fletcher/programs/nursery/metria/metria8/m87.pdf. Some of the seedlings raised at the Morton Arboretum were donated to the 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...
(USNA) in Washington, where they have prospered. No examples are known to grow in Europe; cuttings sent by the USNA to the Bonte Hoek nursery in Glimmen
Glimmen
Glimmen is a village that is part of the municipality of Haren, which lies in the province Groningen in the Netherlands. It is 10 kilometres to the city of Groningen and 5 kilometre to Haren. Glimmen has about 1700 inhabitants...
, Netherlands
Netherlands
The Netherlands is a constituent country of the Kingdom of the Netherlands, located mainly in North-West Europe and with several islands in the Caribbean. Mainland Netherlands borders the North Sea to the north and west, Belgium to the south, and Germany to the east, and shares maritime borders...
, in 2010 failed to root. The species is not known in Australasia
Australasia
Australasia is a region of Oceania comprising Australia, New Zealand, the island of New Guinea, and neighbouring islands in the Pacific Ocean. The term was coined by Charles de Brosses in Histoire des navigations aux terres australes...
. U. elongata is not known to be in commerce, and 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.
North America
- Brenton ArboretumBrenton ArboretumThe Brenton Arboretum 121 acres is a new arboretum and botanical garden in early stages of development, located at 2629 Palo Circle, Dallas Center, Iowa, USA. The Arboretum aims to display all Iowa native trees and shrubs suitable to the site, as well as many other tree species which can grow in...
, Dallas Center, IowaIowaIowa is a state located in the Midwestern United States, an area often referred to as the "American Heartland". It derives its name from the Ioway people, one of the many American Indian tribes that occupied the state at the time of European exploration. Iowa was a part of the French colony of New...
. No accession details available. - Morton ArboretumMorton ArboretumThe 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. nos. not known. Cuttings grafted onto U. pumila rootstocks, planted out in 2008. - U S National ArboretumUnited States National ArboretumThe 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. Trees grown from seed obtained in China. Acc. nos. 68995, 55393.