Ulmus lamellosa
| Ulmus lamellosa | |
|---|---|
_1.jpg) | |
| Ulmus lamellosa Kerkrade Botanical Garden. | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Rosids |
| Order: | Rosales |
| Family: | Ulmaceae |
| Genus: | Ulmus |
| Species: | U. lamellosa |
| Binomial name | |
| Ulmus lamellosa C.Wang & S.L.Chang | |
| Synonyms | |
| |
Ulmus lamellosa, commonly called the Hebei Elm, is a small deciduous tree native to four Chinese provinces, Hebei, Henan, Nei Mongol, and Shanxi, to the west and south of Beijing.[1][2]
Description
A slow growing tree rarely exceeding 10 m in height, U. lamellosa is often multi-stemmed, its upright branches forming a rounded crown, but occasionally forms a single, 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 leaves. The leaves, on 3 mm - 8 mm petioles, are obovate, < 10 cm long by 5.5 cm wide, caudate at the apex, with simply to doubly serrate margins, and densely pubescent when young; the leaves turn a rich gold in autumn.
The perfect wind-pollinated apetalous flowers are produced on second-year shoots in March–April; the large < 35 mm diameter samarae appear from April to May.
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Pests and diseases
In the trials at the Morton Arboretum, Illinois, U. lamellosa was found to have a good resistance to Dutch elm disease.[3] The species was also found to be among the least suitable elms for feeding and reproduction by the adult elm leaf beetle Xanthogaleruca luteola [4] and feeding by the Japanese Beetle Popillia japonica [5] in the USA.
Cultivation
Rare in cultivation beyond China, it is one of a number of Chinese species which 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.[3] Although known to propagate satisfactorily, U. lamellosa is only very rarely found in commerce in Europe and the USA; there are no known cultivars.
Accessions
- North America
- Brenton Arboretum, Dallas Center, Iowa. No accession details available.
- Denver Botanic Gardens. No details available
- Holden Arboretum. Acc. no. 96-178, provenance unrecorded
- Morton Arboretum. Acc. nos. 317-90, 51-95, 655-2006, (listed as syn. U. taihangshanensis): 446-2007.
- University of British Columbia Botanical Garden, Vancouver. Acc. no. 022715-0334-1983.
- U S National Arboretum , Washington, D.C., USA. Acc. nos. 68993, 68994, 76228. Also, listed under syn. U. taihangshanensis: 76237, 76245, 68981.
- Europe
- Botanical Garden Kerkrade , Kerkrade, Netherlands. One large tree; no accession details available.
- Grange Farm Arboretum, Sutton St. James, Spalding, Lincolnshire, UK. Acc. no. 702.
- RBG Edinburgh, Benmore. Acc. no. 19951216. Wild collected in Yunnan province, China by Sino-Scottish Expedition.
- 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, University of Life Sciences, Warsaw, Poland.
References
- ↑ 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.
- ↑ Bi R-c, Yin W-b, Wang Y-n (2003) Study on a niche of population of Ulmus lamellosa in the south area of Shanxi province. Xibei Zhiwu Xuebao 23, pp. 1266-1271.
- ↑ 3.0 3.1 Ware, G. (1995). Little-known elms from China: landscape tree possibilities. Journal of Arboriculture, (Nov. 1995). International Society of Arboriculture, Champaign, Illinois, USA.
- ↑ Miller, F. and Ware, G. (2001). Resistance of Temperate Chinese Elms (Ulmuss spp.) to Feeding of the Adult Elm Leaf Beetle (Coleoptera: Chrysomelidae). Journal of Economic Entomology 94 (1): 162-166. 2001. Entom. Soc.of America.
- ↑ Miller, F., Ware, G. and Jackson, J. (2001). Preference of Temperate Chinese Elms (Ulmuss spp.) for the Feeding of the Japanese Beetle (Coleoptera: Scarabaeidae). Journal of Economic Entomology 94 (2). pp 445-448. 2001. Entom. Soc.of America.
Further reading
- RU, Wenming. "2, BI Runcheng3, ZHANG Feng2 & ZHANG Jintun2, 4**(1Department of Biology and Chemistry, Changzhi College, Changzhi 046011, Shanxi, China)(2Institute of Loess Plateau, Shanxi University, Taiyuan 030006, China)(3College of Life Sciences, Shanxi Normal University, Linfen 041004, Shanxi, China)(4College of Life Sciences, Beijing Normal University, Beijing 100875, China); Population Structure and Pattern of Endangered Ulmus lamellosa in Shanxi [J]." Chinese Journal of Applied & Environmental Biology 1 (2007).
- Bi, R., W. Yin, and Y. Wang. "Study on niche of population of Ulmus lamellosa in the south area of Shanxi province." ACTA BOTANICA BOREALI-OCCIDENTALIA SINICA 23.7 (2003): 1266.