Ulmus lamellosa

Taxobox
status = LC
name = "Ulmus lamellosa"

---

image_caption = "Ulmus lamellosa" leaves, Wisley
regnum = Plantae
divisio = Magnoliophyta
classis = Magnoliopsida
ordo = Rosales
familia = Ulmaceae
genus = "Ulmus"
species = "U. lamellosa"
binomial = "Ulmus lamellosa"
binomial_authority = C.Wang & S.L.Chang
synonyms =
*"Ulmus taihangshanensis" S.Y.Wang

"Ulmus lamellosa" C.Wang & S.L.Chang, the Hebei Elm, is a small deciduous elm restricted to mountain ravines in four provinces to the west and south of Beijing Fu, L., Xin, Y. & Whittemore, A. (2002). Ulmaceae, in Wu, Z. & Raven, P. (eds) "Flora of China", Vol. 5 (Ulmaceae through Basellaceae). Science Press, Beijing, and Missouri Botanical Garden Press, St. Louis, USA. [http://flora.huh.harvard.edu/china/PDF/PDF05/Ulmus.pdf] ] .

Description

Rarely more than 10 m in height, it has upright branches forming a rounded crown supported by a slender trunk < 20 cm d.b.h. Considered closely related to the Large-fruited Elm "U. macrocarpa", it is distinguishable from that species by its mottled, flaking bark and smaller, obovate, bluntly toothed leaves, which turn a rich gold in autumn. The wind-pollinated apetalous flowers are produced on second-year shoots in March - April; the large, almost orbicular 35 mm diameter samarae appear from April to May.

Pests and diseases

In the trials at the Morton Arboretum, Illinois, "U. lamellosa" was found to have a good resistance to Dutch elm disease. In trials in Oklahoma the tree was found to be lightly to moderately damaged by the Elm Leaf Beetle "Xanthogaleruca luteola" [http://www.sunshinenursery.com/survey.htm] .

Cultivation

Rare in cultivation beyond China, it is one of a number of Chinese species that were assessed for their horticultural merit at the Morton Arboretum where it was adjudged suitable for planting in parks and gardens, but typically intolerant of wet soils Ware, G. (1995). Little-known elms from China: landscape tree possibilities. "Journal of Arboriculture", (Nov. 1995). International Society of Arboriculture, Champaign, Illinois, USA. [http://www.ces.ncsu.edu/fletcher/programs/nursery/metria/metria8/m87.pdf] ] .There are no known cultivars of this taxon, nor is it known to be available from any nurseries beyond the USA.

Accessions

;North America
*Denver Botanic Gardens, no details available
*Holden Arboretum, acc. no. 96-178, provenance unrecorded
*Morton Arboretum acc. nos. 317-90, 51-95, 655-2006.
*University of British Columbia Botanical Garden, Vancouver, acc. no. 022715-0334-1983. ;Europe
*Royal Botanic Garden Edinburgh, UK, acc. no. 19951216. Wild collected in Yunnan province, China.
*Royal Horticultural Society gardens, Wisley, bed WA 0201; (planted 1998), (the tree appeared to have succumbed to the drought of summer 2006, and all top growth had died save a few suckers at the base).
*Strona Arboretum [http://en.wikipedia.org/wiki/Ulmus_lamellosa] , University of Life Sciences, Warsaw, Poland.

Nurseries

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

References