Ulmus crassifolia

Taxobox
status = LC
name = "Ulmus crassifolia"


regnum = Plantae
divisio = Magnoliophyta
classis = Magnoliopsida
ordo = Rosales
familia = Ulmaceae
genus = "Ulmus"
species = "U. crassifolia"
binomial = "Ulmus crassifolia"
binomial_authority = Nutt.
synonyms =
*"Ulmus monterreyensis" Mull.
*"Ulmus opaca" Nutt.

"Ulmus crassifolia" Nutt., the Texas Cedar Elm or simply Cedar Elm, is a deciduous tree native to south central North America, mainly in southern and eastern Texas, eastern Oklahoma, Arkansas and Louisiana, with small populations in western Mississippi, southwest Tennessee and northwestern Florida [http://www.efloras.org/object_page.aspx?object_id=7179&flora_id=1] ; it also occurs in northeastern Mexico. They typically grow well in flat river bottom areas referred to as Cedar Elm Flats.

Description

The Cedar Elm is a medium-sized to large deciduous tree growing to 24-27 m tall with a rounded crown. The leaves are small, 2.5 - 5 cm long and 1.3 - 2 cm broad, with an oblique base; leaf fall is late in the year, often in early winter. The flowers are produced in the late summer or early fall; they are small and inconspicuous, with a reddish-purple color. The fruit is a small winged samara 8 - 10 mm long, maturing quickly after the flowering in late fall [http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=233501326] [http://plants.usda.gov/java/profile?symbol=ulcr] .

Pests and diseases

The tree is highly susceptible to Dutch elm disease and moderately damaged by Elm Leaf Beetle "Xanthogaleruca luteola" [http://www.sunshinenursery.com/survey.htm] .

Cultivation

Owing to Dutch elm disease, the Cedar Elm is now rarely cultivated in North America. It is extremely rare in cultivation in Europe Elwes, H. J. & Henry, A. (1913). "The Trees of Great Britain & Ireland". Vol. VII. pp 1848-1929. Private publication. [http://fax.libs.uga.edu/QK488xE4/7tgbi/] ] , and Australasia Auckland Botanical Society (2003). "Journal" Vol. 58 (1), June 2003. ISSN 0113-41332 ] .

Cultivars

*Brazos Rim.

Hybrid cultivars

None known.

Accessions

North America

*Arnold Arboretum, acc. nos. 511-2002, 758-86, both wild collected.
*Chicago Botanic Garden, Glencoe, Illinois. No details available.
*Bartlett Tree Experts, acc. no. 90-1243, unrecorded provenance.
*New York Botanical Garden, acc. no. 79617, unrecorded provenance.

Europe

*Grange Farm, Sutton St. James, Spalding, Lincolnshire, UK, acc. no. 509
*Royal Botanic Garden Edinburgh, acc. no. 20080090, from seed wild collected in USA.
*Sir Harold Hillier Gardens, UK, acc. no. 1980-0443, (Brentry Field).
*University of Copenhagen Botanic Garden. No details available.

Australasia

*Manukau Cemetery & Crematorium, Auckland, New Zealand. No details available.

Nurseries

North America

Widely available

Europe

None known.

Australasia

None known.

References