Ulmus changii

Taxobox
status = LC
name = "Ulmus changii"
regnum = Plantae
divisio = Magnoliophyta
classis = Magnoliopsida
ordo = Rosales
familia = Ulmaceae
genus = "Ulmus"
species = "U. changii"
binomial = "Ulmus changii"
binomial_authority = W. C. Cheng

"Ulmus changii" W. C. Cheng, 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.

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 and the leaves generally ovate, < 11 cm long, glabrescent and smooth when mature [http://209.85.135.104/translate_c?hl=en&u=http://www.plant.ac.cn/tu_page/83/41922.htm&prev=/search%3Fq%3Dulmus-changii%26start%3D30%26hl%3Den%26sa%3DN] . The wind-pollinated petal-less flowers are produced on second-year shoots in March - April, the samarae are almost orbicular, < 35 mm in diameter 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-10: 1930723407 [http://flora.huh.harvard.edu/china/PDF/PDF05/Ulmus.pdf] ] .

Pests and diseases

No information available.

Cultivation

The species is not known to be in cultivation beyond China, and there are no known cultivars of this taxon.

ubspecies & 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

;Asia
*Hangzhou Botanic Garden [http://www.travelchinaguide.com/attraction/zhejiang/hangzhou/botanical-garden.htm] , Hangzhou, Zhejiang, China. Details not known.

References