Ulmus bergmanniana

Taxobox
status = LC
name = "Ulmus bergmanniana"


image_caption = Bergmann's Elm, Kew, London. Photo: Ronnie Nijboer, Bonte Hoek kwekerijen
regnum = Plantae
divisio = Magnoliophyta
classis = Magnoliopsida
ordo = Rosales
familia = Ulmaceae
genus = "Ulmus"
species = "U. bergmanniana"
binomial = "Ulmus bergmanniana"
binomial_authority = C.K.Schneid.

Bergmann's Elm "Ulmus bergmanniana" C. K. Schneid. is a deciduous tree found across much of China in forests at elevations of between 1500 m and 3000 m.

Description

up to 16 mm in diameter. The shoots do not possess the corky wings characteristic of many other elm species.

Pests and diseases

Resistant to Dutch elm disease, in trials [http://www.sunshinenursery.com/survey.htm] in Oklahoma it was also found to be eschewed by the elm leaf beetle "Xanthogaleruca luteola" [http://commons.wikimedia.org/wiki/Xanthogaleruca_luteola] .

Cultivation

The tree was introduced to the West in 1900. There are no known cultivars of this taxon, nor is it known to be available in any nurseries beyond the USA.

ubspecies & varieties

Two varieties are recognized: var. "bergmanniana" L.K.Fu, and var. "lasiophylla" C.K.Schneid..

Etymology

Unclear; possibly named for the American botanist Louis Susette Bergmann, (1868-?).

Accessions

;North America
*Chicago Botanic Garden, Glencoe, Illinois. Planted in West Collections Area.
*Denver Botanic Gardens, (no acc. no. available).
*Morton Arboretum, acc. no. 44-95. Obtained from Yunnan Province, China. ;Europe
*Grange Farm, Sutton St. James, Spalding, Lincolnshire, UK, acc. no. 507
*Royal Botanic Gardens Edinburgh, UK, acc. no. 20030262, origin unknown
*Royal Botanic Gardens, Kew, UK, acc. no. 1973-11708. Tree planted 1972, British champion tree, 8 m high, 34cm d.b.h. in 2001 Johnson, Owen (ed.) (2003). "Champion Trees of Britain & Ireland". Whittet Press, ISBN 9781873580615.] .; origin undisclosed.

Nurseries

;North America
*Sunshine Nursery [http://www.sunshinenursery.com/catalogue.htm] , Clinton, Oklahoma.

References