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Ulmus uyematsui

Species of plant

Summary

Species of plant

Ulmus uyematsui Hayata, commonly known as the Alishan elm, is endemic to forests at elevations of 800 - in Alishan, Chiayi County http://itouchmap.com/?c=tw&UF=-2626874&UN=-3624130&DG=MTS, central Taiwan, where it is considered one of the minor tree species. The tree was first named and described by the Japanese botanist Bunzō Hayata in 1913, in the aftermath of the First Sino-Japanese War, when the Republic of Formosa was ceded to Japan.

Description

The tree grows to a height of 25 m with a d.b.h. to 80 cm. The bark is grey, longitudinally fissured, and exfoliates in irregular flakes. The branchlets are brown, glabrous, though pubescent when young, and devoid of corky wings. The largely glabrous leaves are elliptic to oblong-elliptic 5–11 cm long × 3–4.5 cm wide (Hui-lin Li in Flora of Taiwan gives 6–15 cm long by 3–5 cm wide), typically caudate at the apex; the margins are doubly serrate. The leaves are oblique at the base, have short (2–6 mm) petioles, and are flushed dark-red (anthocyanin pigmentation) on emergence. The perfect wind-pollinated apetalous flowers appear on second-year shoots in February, the obovate to orbicular samarae, 10–15 × 8–10 mm, on half-centimetre pedicels, in March.

Hayata considered the tree similar to Ulmus castaneifolia, differing only in the much thinner leaves, and absence of pubescence on the axils of the primary lateral veins. This comparison was not repeated in later descriptions. File:Ulmus uyematsui, emergent leaves.jpg|Emergent leaves with dark red colouration File:Ulmus uyematsui, Portchester.jpg|10-year-old tree, Portchester, England File:U. uyematsui seed.jpg|Samarae File:Ulmus uyematsui leaf with 2 cm scale bar.jpg| Leaf, with scale File:David & Japanese elm leaves.jpg|Ulmus uyematsui leaf (left) and Japanese elm leaf (right)

Pests and diseases

No information available.

Cultivation

U. uyematsui is rare in cultivation beyond Taiwan; it was introduced to commerce in the Netherlands in 2011. U. uyematsui was selected as one of eight tree species considered hardy enough to survive in the ecological reclamation of the Wujiazi iron mine 270 km north-east of Beijing in Liaoning Province, China, where winter temperatures fall as low as -20 C.

Etymology

The species is named for K. Uyematsu, who collected the plant in 1913.

Accessions

North America

  • United States National Arboretum, Washington, D.C., US. Two small trees imported 2011. No accession details available.

Europe

Nurseries

;Europe

References

References

  1. 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. 1930723407 [http://flora.huh.harvard.edu/china/PDF/PDF05/Ulmus.pdf]
  2. Hyun, S. K. (1969). White pines of Asia: ''Pinus koraiensis'' and ''Pinus armandii''. Biology of rust resistance in forest trees. Proceedings of a NATO-IUFRO Advanced Study Institute, Aug. 17–24, 1969. University of Idaho, USA. ''Misc. publication 1221'', p. 141. USDA, Feb. 1972.
  3. "Plant Name Details for ''Ulmus uyematsui''". [[International Plant Names Index.
  4. Hayata, B. (1913). ''Icones Plantarum Formosanarum, Vol. 3.'' p. 174 (1913).
  5. [http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=242353395 efloras.org: ''U. uyematsui'' description]
  6. ''Flora of Taiwan'' 2:114. 1976
  7. "Leaves labelled Ulmus uyematsui in asianflora".
  8. {{Naturalis Biodiversity Center
  9. Fruit photograph with scale, ''U. uyematsui'', Taiwan, kplant.biodiv.tw
  10. Li, S, Li, S-x, Liu, J, Wu, Y. (2009). Selection of vegetation species for Wujiazi iron mine ecological recovery. ''Journal of Hebei University of Engineering (Natural Science Edition), 2009-03''. University of Hebei, China.
  11. Tree formerly labelled ''U. davidiana'', west end of Chinese Hillside, RBGE; determined as ''U. uyematsui'' by RBGE in 2024. New determination mentioned in Seddon & Shreeve, 'Great British Elms', Kew, 2024
  12. [https://data.rbge.org.uk/search/livingcollection/?cfg=accessions.cfg&acc_num=20112233 Royal Botanic Garden Edinburgh, 'Catalogue of the Living Collections': ''Ulmus uyematsui'', specimen 20112233]
  13. Sir Harold Hillier Gardens. (2017). ''List of Living Accessions: Ulmus''
Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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