Ulmus parvifolia

Short description: Species of tree

Ulmus parvifolia

Chinese elm, Hilversum

Conservation status

Least Concern (IUCN 3.1)[1]

Scientific classification
Kingdom:  | Plantae
Clade:  | Tracheophytes
Clade:  | Angiosperms
Clade:  | Eudicots
Clade:  | Rosids
Order:  | Rosales
Family:  | Ulmaceae
Genus:  | Ulmus
Subgenus:  | U. subg. Ulmus
Section:  | U. sect. Microptelea
Species:  |

U. parvifolia

Binomial name
Ulmus parvifolia

Jacq.

Synonyms

* Microptelea parvifolia Spach
* Planera parvifolia Sweet
* Ulmus campestris var. chinensis Loudon
* Ulmus chinensis Persoon
* Ulmus parvifolia Maxim., Franch. et Savatier, Forbes & Hemsl., Shirasawa
* Ulmus sieboldii Daveau
* Ulmus virgata Roxburgh

Ulmus parvifolia, commonly known as the Chinese elm[2] or lacebark elm, is a species native to eastern Asia, including China, India, Japan, Korea, and Vietnam.[3] It has been described as "one of the most splendid elms, having the poise of a graceful Nothofagus".[4]

The tree was introduced to the UK in 1794 by James Main, who collected in China for Gilbert Slater of Low Layton, Essex.[5][6]

## Contents

* 1 Description
* 2 Wood and timber
* 3 Taxonomy
* 4 Pests and diseases
* 5 Cultivation
* 5.1 Bonsai
* 6 Cultivars
* 6.1 Hybrid cultivars
* 7 Accessions
* 8 References
* 9 External links

## Description

A small to medium deciduous or semideciduous (rarely semievergreen) tree, it grows to 10–18 m (33–59 ft) tall and 15–20 m (49–66 ft) wide with a slender trunk and crown. The leathery, lustrous green, single-toothed leaves are small, 2–5 cm long by 1–3 cm broad,[7] and often retained as late as December or even January in Europe and North America. The apetalous wind-pollinated perfect flowers are produced in early autumn, small and inconspicuous. The fruit is a samara, elliptical to ovate-elliptical, 10–13 mm long by 6–8 mm broad.[3] The samara is mostly glabrous, the seed at the centre or toward the apex, is borne on a stalk 1–3 mm in length; it matures rapidly and disperses by late autumn. The trunk has a handsome, flaking bark of mottled greys with tans and reds, giving rise to its other common name, the lacebark elm, although scarring from major branch loss can lead to large, canker-like wounds. Ploidy: 2n = 28.[6][8][9][10][11]

* Young U. parvifolia in new leaf, May

* New leaves

* U. parvifolia juvenile

* Foliage and fruit

* Bark

* An older U. parvifolia

Many nurserymen and foresters mistakenly refer to Ulmus pumila, the rapidly growing, disease-ridden, relatively short-lived, weak-wooded Siberian elm, as "Chinese elm". This has given the true Chinese elm an undeserved bad reputation. The two elms are very distinct and different species. The Siberian elm's bark becomes deeply ridged and furrowed with age, among other obvious differences. It possesses a very rough, greyish-black appearance, while the Chinese elm's smooth bark becomes flaky and blotchy, exposing very distinctive, light-coloured mottling, hence the synonym lacebark elm for the real Chinese elm.[12]

## Wood and timber

Elms, hickory, and ash all have remarkably hard, tough wood, making them popular for tool handles, bows, and baseball bats. Chinese elm is considered the hardest of the elms. Chinese elm is said to be the best of all woods for chisel handles and similar uses due to its superior hardness, toughness, and resistance to splitting. Chinese elm lumber is used most for furniture, cabinets, veneer, hardwood flooring, and specialty uses such as longbow construction and tool handles. Most commercially milled lumber goes directly to manufacturers rather than to retail lumber outlets.[citation needed]

Chinese elm heartwood ranges in tone from reddish-brown to light tan, while the sapwood approaches off-white. The grain is often handsome and dramatic. Unlike other elms, the freshly cut Chinese elm has a peppery or spicy odour. While it turns easily and will take a nice polish off the lathe without any finish, and it holds detail well, the fibrous wood is usually considered too tough for carving or hand tools. Chinese elm contains silica which is hard on planer knives and chainsaws, but it sands fairly easily. Like other woods with interlocking grain, planes should be kept extra sharp to prevent tearing at the grain margins. It steam-bends easily and holds screws well, but pilot holes and countersinking are needed. It tends to be a "lively" wood, tending to warp and distort while drying. This water-resistant wood easily takes most finishes and stains.[citation needed]

## Taxonomy

Subspecies, varieties, and forms:

* Ulmus parvifolia var. coreana Nakai
* Ulmus parvifolia f. lanceolata Ueki

## Pests and diseases

The Chinese elm is highly resistant, but not immune, to Dutch elm disease. It is also very resistant to the elm leaf beetle Xanthogaleruca luteola, but has a moderate susceptibility to elm yellows.[13] In trials at the Sunshine Nursery, Oklahoma, the species was adjudged as having the best pest resistance of about 200 taxa [14] However, foliage was regarded as only "somewhat resistant" to black spot by the Plant Diagnostic Clinic of the University of Missouri.[15]

Cottony cushion scale or mealy bugs, often protected and "herded" by ants, exude sticky, sweet honeydew, which can mildew leaves and be a minor annoyance by dripping on cars and furniture. However, severe infestations on or obvious damage to otherwise healthy trees are uncommon.[citation needed]

In some regions of the Southern United States, a fungus known as Phymatotrichopsis omnivora is known to cause sudden death of lacebark elms when infected.[citation needed]

## Cultivation

The Chinese elm is a tough landscape tree, hardy enough for use in harsh planting situations such as parking lots, small planters along streets, and plazas or patios. The tree is arguably the most ubiquitous elm, now found on all continents except Antarctica. It was introduced to Europe at the end of the 18th century as an ornamental and is found in many botanical gardens and arboreta.[16][17] It was introduced to the United States in 1794,[18] and has proved very popular in recent years as a replacement for American elms killed by Dutch elm disease. The tree was distributed in Victoria, Australia, from 1857.[19] At the beginning of the 20th century, Searl's Garden Emporium, in Sydney, marketed it.[citation needed] Three U. parvifolia were supplied in 1902 by Späth to the Royal Botanic Garden Edinburgh.[20][21] In New Zealand, it was found to be particularly suitable for windswept locations along the coast. The tree is commonly planted as an ornamental in Japan,[22] notably around Osaka Castle.

Ulmus parvifolia is one of the cold-hardiest of the Chinese species. In artificial freezing tests at the Morton Arboretum.[23] the LT50 (temp. at which 50% of tissues die) was found to be −34 °C (−29 °F).

* Ulmus parvifolia, State Nursery, Campbelltown, New South Wales (c.1908)

* Chinese elm planted around Osaka Castle, Japan

### Bonsai

Owing to its versatility and ability to tolerate a wide range of temperatures, light, and humidity conditions, the Chinese elm is a popular choice as a bonsai species. It is perhaps the single most widely available. It is considered a good choice for beginners because of its high tolerance of pruning.[24]

* U. parvifolia bonsai, multitrunk style, about 100 years old

* Chinese elm bonsai

* Chinese elm bonsai

* Chinese elm bonsai

## Cultivars

Numerous cultivars have been raised, mostly in North America:

### Hybrid cultivars

It is an autumn-flowering species, whereas most other elms flower in the spring. Hybrids include:[citation needed]

* Frontier
* Rebella

## Accessions

North America

* Arnold Arboretum, US. Acc. nos. 1353-73, 17917, 195-90, 197-90.
* Bartlett Tree Experts, US. Acc. nos. 5546, 8109.
* Brenton Arboretum, Dallas Center, Iowa, US. No details available.
* Brooklyn Botanic Garden, New York City , US. Acc. nos. 000880, 160001, 20020466, 850222, X00450, X00485, X02727, X02771.[25]
* Chicago Botanic Garden, US. 2 trees, no other details available.
* Dominion Arboretum, Ottawa, Ontario, Canada. No acc. details.
* Fullerton Arboretum, California State University, US. Acc. no. 80-036.[26]
* Holden Arboretum, US. Acc. nos. 57-1241, 80-665, 84-1214, 90-323.
* Longwood Gardens, US. Acc. nos. 1957-1058, 1959-1500, 1960-1138, 1991-0981.
* Missouri Botanical Garden, St. Louis, US. Acc. nos. 1986-0108, 1986-0276, 1986-0277, 1987-0019, 199-3195, 1996-3462.
* Morris Arboretum, University of Pennsylvania, US. Acc. no. 32-0052-A.[27]
* Morton Arboretum, US. Acc. nos. 991-27, 772-54, 1231–57, 558-83, 52-96.
* New York Botanical Garden, US. Acc. nos. 195/56, 486/91, 68072.
* Phipps Conservatory, US. Acc. nos. 83-006, 83-058, 91-050, 2001-212UN.
* Scott Arboretum, US. Acc. nos. 62210, 71765, 71767, 71771, 75152, 64441.
* Smith College, US. Acc. no. 42894.
* U S National Arboretum,[28] Washington, D.C., US. Acc. nos. 58000/1/2/3/4/5/6/7/8.

Europe

* Brighton & Hove City Council, UK. NCCPG Elm Collection.[29]
* Cambridge Botanic Garden,[30] University of Cambridge, UK. No accession details available.
* Dyffryn Gardens, Glamorgan. UK champion, 13 m high, 37 cm d.b.h., last surveyed 1997.[31]
* Grange Farm Arboretum, Sutton St. James, Spalding, Lincolnshire, UK. Acc. no. 516.
* Great Fontley Butterfly Conservation Elm Trials plantation, UK. One seedling planted 2019.
* Hortus Botanicus Nationalis, Salaspils, Latvia. Acc. nos. 18150, 18151.
* Linnaean Gardens of Uppsala, Sweden. Acc. no. 2002-1542.
* Royal Botanic Gardens Kew. Acc. nos. 1979-1613, 1979-1614, 1982–8479, 1982-8505, 1982-6280, 1982-6284, 2002-137, 2003-1267, 2005-1076.
* Royal Botanic Gardens Kew Wakehurst Place, UK. Acc. nos. 1969-33664, 1969-35133, 1973-21049, 1973-21525.
* Royal Horticultural Society Gardens, Wisley, UK. No details are available.
* Wijdemeren City Council Elm arboretum: 4 cv. ‘UPMTF’ planted Molenmeent Loosdrecht in 2017.
* Strona Arboretum, University of Life Sciences, Warsaw, Poland. No accession details are available.
* Tallinn Botanic Garden, Estonia.[32] No accession details available.
* Thenford House arboretum, Banbury, UK. No details are available.
* University of Copenhagen Botanic Garden. Denmark. Acc. nos. S1956-1338, S1997-1304.
* Westonbirt Arboretum, Tetbury, Glos., UK. Planted 1981. No acc. no.[33]

Australasia

* Eastwoodhill Arboretum, Gisborne, New Zealand. 9 trees, details not known.[34]

## References

1. ↑ Lin, Q.; Botanic Gardens Conservation International (BGCI).; IUCN SSC Global Tree Specialist Group (2019). "Ulmus parvifolia". IUCN Red List of Threatened Species 2019: e.T147481874A147620206. doi:10.2305/IUCN.UK.2019-2.RLTS.T147481874A147620206.en. https://www.iucnredlist.org/species/147481874/147620206. Retrieved 19 November 2021.
2. ↑ "Ulmus parvifolia Jacq.". Natural Resources Conservation Service PLANTS Database. USDA. https://plants.usda.gov/core/profile?symbol=ULPA.
3. ↑ 3.0 3.1 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; also available as Fu, L.; Xin, Y.. "Ulmus parvifolia". Flora of China. Missouri Botanical Garden, St. Louis, Missouri & Harvard University Herbaria, Cambridge, Massachusetts. http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200006330.
4. ↑ Hilliers' Manual of Trees & Shrubs, 4th edition, 1977, David & Charles, Newton Abbot, England
5. ↑ Elwes, H. J. & Henry, A. (1913). The Trees of Great Britain & Ireland. Vol. VII. 1848–1929. Republished 2004 Cambridge University Press, ISBN:9781108069380
6. ↑ 6.0 6.1 Bean, W. J. (1981). Trees and shrubs hardy in Great Britain, 7th edition. Murray, London.
7. ↑ "Herbarium specimen - E00824803". Herbarium Catalogue. Royal Botanic Garden Edinburgh. http://data.rbge.org.uk/herb/E00824803. Ulmus parvifolia Jacq. (1909 specimen, Breslau)
8. ↑ White, J & More, D. (2003). Trees of Britain & Northern Europe. Cassell's, London.
9. ↑ "Chinese elm Ulmaceae Ulmus parvifolia". http://www.cnr.vt.edu/dendro/dendrology/syllabus/uparvifolia.htm.
10. ↑ "Ulmus pumila L.". Natural Resources Conservation Service PLANTS Database. USDA. https://plants.usda.gov/core/profile?symbol=ULPU.
11. ↑ "SaylorPlants.com - Chinese Elm, Lacebark Elm ( Ulmus parvifolia )". http://www.saylorplants.com/pd.asp?pid=1935.
12. ↑ Leopold, D. J. (1980). "Chinese and Siberian elms". Journal of Arboriculture 6 (7): 175–179. http://joa.isa-arbor.com/request.asp?JournalID=1&ArticleID=1664&Type=2.
13. ↑ Mittempergher, L; Santini, A (2004). "The history of elm breeding". Investigacion Agraria: Sistemas y Recursos Forestales 13 (1): 161–177. http://www.inia.es/gcontrec/Pub/161-177-(14)-The_history_1161943529015.pdf.
14. ↑ "greenbeam.com - Domain Name For Sale". https://dan.com/buy-domain/greenbeam.com.
15. ↑ "Disease resistant and tolerant plant varieties, Plant Diagnostic Clinic, MU Extension". http://soilplantlab.missouri.edu/plant/diseases/resistant.htm.
16. ↑ "Ulmus parvifolia Jacq. (1854) K000852632". Board of Trustees of the Royal Botanic Gardens, Kew. http://apps.kew.org/herbcat/getImage.do?imageBarcode=K000852632. ; "Ulmus parvifolia Jacq. (1867) K000852633". Board of Trustees of the Royal Botanic Gardens, Kew. http://apps.kew.org/herbcat/getImage.do?imageBarcode=K000852633. ; "Ulmus sieboldii Daveau (1913) K000852631". Board of Trustees of the Royal Botanic Gardens, Kew. http://apps.kew.org/herbcat/getImage.do?imageBarcode=K000852631.
17. ↑ Ryston Hall Arboretum catalogue. c. 1920. pp. 13–14. https://commons.wikimedia.org/wiki/File:Ryston_Hall_Arboretum_Catalogue_c._1920_pages_13,14.jpg.
18. ↑ "Missouri Botanical Garden bulletin.". [St. Louis : Missouri Botanical Garden]. 29 March 1913. http://archive.org/details/mobot31753002462148.
19. ↑ "Trove". https://trove.nla.gov.au/work/34926332?selectedversion=NBD9147128.
20. ↑ Accessions book. Royal Botanic Garden Edinburgh. 1902. pp. 45, 47. https://commons.wikimedia.org/wiki/File:Royal_Botanic_Garden_Edinburgh._(1902)._Accessions_book_pages_45,47.jpg.
21. ↑ "Herbarium specimen - E00824804". Herbarium Catalogue. Royal Botanic Garden Edinburgh. http://data.rbge.org.uk/herb/E00824804. Ulmus parvifolia Jacq. (1902, Späth nursery); "Herbarium specimen - E00824805". Herbarium Catalogue. Royal Botanic Garden Edinburgh. http://data.rbge.org.uk/herb/E00824805. Ulmus parvifolia Jacq. (1902, Späth); "Herbarium specimen - E00824802". Herbarium Catalogue. Royal Botanic Garden Edinburgh. http://data.rbge.org.uk/herb/E00824802. Ulmus parvifolia Jacq. (1902, Späth)
22. ↑ Hishiyama, C. (Ed.). (2018). A picture book of (Japanese) trees,  p.81. (in Japanese). Seibidoshuppan, Japan. ISBN:9784415310183
23. ↑ Shirazi, A. M. & Ware, G. H. (2004). Evaluation of New Elms from China for Cold Hardiness in Northern Latitudes. International Symposium on Asian Plant Diversity & Systematics 2004, Sakura, Japan.
24. ↑ D'Cruz, Mark (11 February 2020). "Ma-Ke Bonsai Care Guide for Ulmus parvifolia". Ma-Ke Bonsai. https://www.makebonsai.com/post/chinese-elm.
25. ↑ "Brooklyn Botanic Garden". http://www.bbg.org/cgi/bgbase/search.cgi.
26. ↑ "Fullerton Arboretum | Cal State Fullerton". https://fullertonarboretum.org/.
27. ↑ "The Morris Arboretum of the University of Pennsylvania". http://www.business-services.upenn.edu/arboretum/living2.html.
28. ↑ http://www.usna.usda.gov/index.htm [no|permanent dead link|dead link}}]
29. ↑ "List of plants in the {elm} collection". Brighton & Hove City Council. http://www.brighton-hove.gov.uk/content/leisure-and-libraries/parks-and-green-spaces/list-plants-collection.
30. ↑ "Welcome to Cambridge Botanic Garden - Find Out More". https://www.botanic.cam.ac.uk/.
31. ↑ Johnson, Owen (ed.) (2003). Champion Trees of Britain & Ireland. Whittet Press, ISBN:978-1-873580-61-5.
32. ↑ "tba.ee". http://www.tba.ee/index.php?lang=eng.
33. ↑ "The Forestry Commission - The National Arboreta". http://www.forestry.gov.uk/forestry/infd-62qk8w.
34. ↑ "Eastwoodhill - National Arboretum of New Zealand". http://www.eastwoodhill.org.nz/gardens--collection/collection.aspx?Type=&G=Ulmus.

## External links

* U. parvifolia, Flora of China, www.efloras.org
* U. parvifolia, Flora of North America, www.efloras.org

Wikidata ☰ Q1074099 entry

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