Ulmus gaussenii

Ulmus gaussenii W. C. Cheng, the Anhui, or hairy, elm, is a medium size deciduous tree whose natural range is restricted to the valleys of the Langya limestone mountains of Chu XianGeographical Names: Chu Xian, Anhui, satellite photograph. National Geospatial-Intelligence Agency, Bethesda, MD, USA http://www.geographic.org/geographic_names/name.php?uni=6629625&fid=1226&c=china in Anhui Province, eastern China.Fu, L. and Xin, Y. 'Elms of China' in Dunn, C. P. (ed.) (2000). The Elms - Breeding, Conservation, and Disease Management., Part 1, Taxonomy, 21-44. Springer Science + Business Media, New York. The tree was most commonly found on the flood plains, indicating a tolerance of periodic inundation. However, U. gaussenii is now possibly the rarest and most endangered elm species, with only approximately 30 trees known to survive in the wild in 2009.Grimshaw, J. & Bayton, R. (2009). New Trees - Recent Introductions to Cultivation. RBG Kew, London. The tree was introduced to the West in 1995, at the Morton Arboretum, Illinois, as part of an evaluation of Chinese elms for landscape use.Ware, G. (1995). Little-known elms from China: landscape tree possibilities. Journal of Arboriculture, (Nov. 1995). International Society of Arboriculture, Champaign, Illinois, US. [1] However, closer examination of the leaves at the Morton suggests that their trees are in fact Ulmus castaneifolia.Brookes, A. H. (2022). Great Fontley Elm Trial, 2022 Report. Butterfly Conservation, Lulworth, England.

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