- Ulmus alata
Taxobox
status = LC
name = "Ulmus alata"
image_caption = "U. alata" leaves. Photo: Ronnie Nijboer, Bonte Hoek kwekerijen
regnum =Plant ae
divisio = Magnoliophyta
classis = Magnoliopsida
ordo =Rosales
familia =Ulmaceae
genus = "Ulmus "
species = "U. alata"
binomial = "Ulmus alata"
binomial_authority = Michx.
synonyms =
*"Ulmus pumila" (not L.) Walter"Ulmus alata"
Michx. , the Winged Elm or Wahoo, is a small- to medium-sized deciduous tree endemic to the southern and south-centralUnited States .Description
On the silty uplands of the
Mississippi , and Delta it can attain 27 m (89 ft) in height, although the trunk diameter rarely exceeds 60 cm (24 in) d.b.h. The canopy form is variable, from pyramidal to rounded. As its common name implies, the tree is most easily recognized by the very broad, thin pair of corky wings that form along the branchlets after a couple of years. The leaves are small, < 65 mm (2.5 in) long and < 20 mm (0.8 in) broad, oblong-lanceolate to narrowly elliptic, thin in texture, and smooth above. The wind-pollinated perfect flowers are borne on long pedicels in March and April before the leaves appear. The reddish samarae are relatively small, < 8 mm long, narrowly elliptic with two long incurving stigmas at the tip, and usually disperse by the end of April 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/] ] Schnelle, M. (1999). Field Notes: Ulmus alata. "American Nurseryman", page 1998, 1st March, 1999. p. 98.Chicago ] .Pests and diseases
Like its compatriots, the species is very susceptible to
Dutch elm disease andElm Yellows . [http://www.fs.fed.us/r8/foresthealth/idotis/diseases/elmpnecr.html] .Cultivation
The tree is tolerant of a wide range of soils, and of ponding, but is the least shade-tolerant of the North American elms. However, it can still be found in woodland although its growth in that environment is very slow, the trunk increasing in diameter by < 5mm (0.2 in) per annum. The tree is occasionally considered a nuisance as it readily invades old fields, forest clearings and rangelands, proving particularly difficult to eradicate with herbicides University of Florida, Environmental Horticulture Department (1994). "Fact Sheet ST-648". Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences. ] . The tree is rarely found beyond its natural range, although it remains in commercial cultivation in the
USA , and occasionally inEurope ; it is very uncommon inAustralasia Auckland Botanical Society (2003). "Journal" Vol. 58 (1), June 2003. ISSN 0113-41332 ] .Uses
The Winged Elm is of minimal commercial significance, its hard timber considered no more remarkable than that of other American elms, and of limited use because of the commonly small size of the trees.
Cultivars
*Lace Parasol
Hybrid cultivars
None known.
Accessions
;North America
*Arnold Arboretum , acc. no. 404-95, wild collected.
*Bartlett Tree Experts [http://www.bartlett.com] , acc. no. 1438, unrecorded provenance.
*Brooklyn Botanic Garden [http://www.bbg.org/cgi/bgbase/search.cgi] ,New York , acc. nos. 730275, X00886
*Bernheim Arboretum and Research Forest [http://www.bernheim.org/species_lists.htm] , Clermont,Kentucky . No details available.
*Morton Arboretum , acc. no. 116-96, wild collectedPapoose Lake ,Illinois .;Europe
*Brighton & Hove City Council,UK ,NCCPG Elm Collection [http://www.brighton-hove.gov.uk/index.cfm?request=c1108042] , 1 tree at East Brighton Park, UK champion 13 m high, 31 cmd.b.h. in2001 Johnson, Owen (ed.) (2003). "Champion Trees of Britain & Ireland". Whittet Press,ISBN 9781873580615 .] .
*Grange Farm,Sutton St. James ,Spalding ,Lincolnshire ,UK , acc. no. 506
*Royal Botanic Garden Edinburgh , acc. no. 20080092, from seed wild collected in USA.
*Thenford House,Northamptonshire ,UK . No details available.;Australasia
*Manukau Cemetery & Crematorium,Auckland ,New Zealand . No details available.Nurseries
;North AmericaWidely available.;Europe
*Grange Farm Plants,Spalding , Lincs.,UK .
*Plantentuin Esveld,Netherlands [http://www.esveld.nl/voorraadengels/voorrulmus.htm] .;AustralasiaNone known.eed suppliers
*Sheffield's Seeds Co. Inc. [http://www.sheffields.com/products/simple_search] ,
New York ,USA .References
External links
*http://www.na.fs.fed.us/spfo/pubs/silvics_manual/Volume_2/ulmus/alata.htm Ulmus alata Michx.
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