dcsimg

Description

provided by eFloras
Trees, to 20 m tall, d.b.h. to 90 cm, deciduous. Bark dark gray, grayish brown, or grayish black. Branchlets reddish brown, pubescent when young, unwinged. Winter buds dark reddish brown, ovoid-orbicular to ± globose, glabrous. Petiole 2-8 mm, pubescent; leaf blade ovate to ovate-elliptic, 3-11 × 1.7-4.5 cm, abaxially often scabrous and with hairs tufted in forks of secondary veins and sometimes also scattered along major veins, adaxially sparsely appressed villous or scattered hispidulous when young but glabrescent and smooth or ± scabrous with age, base obliquely rounded to obtuse, margin sharply simply serrate or rarely doubly serrate, apex slenderly acuminate to mucronate; secondary veins 9-20(-24) on each side of midvein. Flowers from floral buds or mixed buds. Perianth campanulate, 4- or 5-lobed, margin ciliate. Samaras tan, ± orbicular to narrowly elliptic-orbicular, 1.5-3.5 × 1.3-2.2 cm, pubescent; stalk as long as or slightly shorter than perianth, densely pubescent; perianth persistent. Seed at center or slightly toward base of samara. Fl. Mar-Apr, fr. Mar-Apr.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of China Vol. 5: 4 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of China @ eFloras.org
editor
Wu Zhengyi, Peter H. Raven & Hong Deyuan
project
eFloras.org
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Distribution

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Anhui, Fujian, Guangxi, Guizhou, Hubei, Hunan, Jiangsu, Jiangxi, Sichuan, Yunnan, Zhejiang.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of China Vol. 5: 4 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of China @ eFloras.org
editor
Wu Zhengyi, Peter H. Raven & Hong Deyuan
project
eFloras.org
original
visit source
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eFloras

Habitat

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* Montane forests; 200-1800 m.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of China Vol. 5: 4 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of China @ eFloras.org
editor
Wu Zhengyi, Peter H. Raven & Hong Deyuan
project
eFloras.org
original
visit source
partner site
eFloras

Ulmus changii

provided by wikipedia EN

Ulmus changii, occasionally known as the Hangzhou elm, is a small deciduous tree found across much of China in forests at elevations of up to 1800 m.[1] Owing to its increasing scarcity, U. changii was added to the Hainan Province Protected Plants List in 2006.

Description

The tree can reach a height of 20 m with a trunk of about 0.9 m d.b.h; the bark is dark grey. The leaves are generally ovate, < 11 cm long, glabrescent and smooth when mature. The wind-pollinated apetalous flowers are produced on second-year shoots in March - April, the samarae are almost orbicular, < 35 mm in diameter.[1]

Pests and diseases

Ulmus changii was found to be among the least suitable elms for feeding and reproduction by the adult elm leaf beetle Xanthogaleruca luteola [2] and highly preferred for feeding by the Japanese beetle Popillia japonica[3] in the United States.

Cultivation

The species is extremely rare in cultivation beyond China, although in the US the species is rated hardy enough for USDA zone 5. There are no known cultivars of this taxon, nor is it known to be in commerce.

Subspecies & varieties

Two varieties are recognized: var. changii L.K.Fu, and var. kunmingensis W.C.Cheng.

Etymology

The tree is named for S. S. Chang, the Chinese botanist who identified the species in 1936.

Accessions

North America
Asia
Europe

Nurseries

Europe

References

  1. ^ a b 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. ISBN 1-930723-40-7 [1]
  2. ^ Miller, F.; 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. doi:10.1603/0022-0493-94.1.162. PMID 11233108. S2CID 42980569.
  3. ^ Miller, F.; Ware, G.; 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): 445–448. doi:10.1603/0022-0493-94.2.445. PMID 11332837. S2CID 7520439.
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Wikipedia authors and editors
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wikipedia EN

Ulmus changii: Brief Summary

provided by wikipedia EN

Ulmus changii, occasionally known as the Hangzhou elm, is a small deciduous tree found across much of China in forests at elevations of up to 1800 m. Owing to its increasing scarcity, U. changii was added to the Hainan Province Protected Plants List in 2006.

license
cc-by-sa-3.0
copyright
Wikipedia authors and editors
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visit source
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wikipedia EN