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Acer circinatum

Acer circinatum , Photo: Michael Lahanas

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids II
Ordo: Sapindales

Familia: Sapindaceae
Subfamilia: Hippocastanoideae
Tribus: Acereae
Genus: Acer
Species: Acer circinatum
Name

Acer circinatum Pursh, Fl. Amer. Sept. 1: 267 (1813).

Acer circinatum

Acer circinatum (*)

References
Additional references

Murray, A.E., 1970. A monograph of the Aceraceae. Unpublished Ph.D. dissertation, The Pennsylvania State University. Reference page.
Gelderen, D.M. van, Jong, P.C.de & Oterdoom, H.J. 1994. Maples of the world. Timber Press, Portland, Or., 458 pp. ISBN 0-88192-000-2. Reference page.
Govaerts, R.H.A. 1995. World Checklist of Seed Plants 1(1, 2). 483, 529 pp. MIM, Deurne. ISBN 90-341-0852-X (issue 1) ISBN 90-341-0853-8 (issue 2). Reference page.

Links

Barstow, M., Crowley, D. & Rivers, M.C. 2017. Acer circinatum. The IUCN Red List of Threatened Species 2017. IUCN Red List Category: Least Concern. DOI: 10.2305/IUCN.UK.2017-3.RLTS.T193533A2242484.en.
USDA, ARS, Germplasm Resources Information Network. Acer circinatum in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 9 January 2020.
Govaerts, R. et al. 2020. Acer circinatum in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2020 January 9. Reference page.
International Plant Names Index. 2020. Acer circinatum. Published online. Accessed: 9 January 2020.

Vernacular names
Deutsch: Weinblatt-Ahorn
English: Vine Maple
suomi: Viinivaahtera
français: Érable circiné
magyar: Szőlőlevelű juhar
polski: Klon okrągłolistny
русский: Клён завитой
svenska: Vinlönn

Acer circinatum, the vine maple, is a species of maple native to western North America, from southwest British Columbia to northern California, usually within 300 kilometres (190 mi) of the Pacific Ocean coast, found along the Columbia Gorge and Coastal Forest.[3][4] It belongs to the Palmatum group of maple trees native to East Asia with its closest relatives being the Acer japonicum (Fullmoon Maple) and Acer pseudosieboldianum (Korean Maple). It can be difficult to distinguish from these species in cultivation. It is the only member of the Palmatum group that resides outside of Asia.

It most commonly grows as a large shrub growing to around 5 to 8 metres (16 to 26 ft) tall, but it will occasionally form a small to medium-sized tree, exceptionally to 18 metres (59 ft) tall. The shoots are slender and hairless. It typically grows in the under story below much taller forest trees, but can sometimes be found in open ground, and occurs at altitudes from sea level up to 1,500 metres (4,900 ft).[3][4]

The leaves are opposite, and palmately lobed with 7 to 11 lobes, almost circular in outline, 3 to 14 centimetres (1.2 to 5.5 in) long and broad, and thinly hairy on the underside; the lobes are pointed and with coarsely toothed margins. The leaves turn bright yellow to orange-red in fall. The flowers are small, 6 to 9 millimetres (0.24 to 0.35 in) in diameter, with a dark red calyx and five short greenish-yellow petals; they are produced in open corymbs of 4 to 20 together in spring. The fruit is a two-seeded samara, each seed 8 to 10 millimetres (0.31 to 0.39 in) in diameter, with a lateral wing 2 to 4 centimetres (0.79 to 1.57 in) long.[3][4][5]

Vine maple trees can bend over easily. Sometimes, this can cause the top of the tree to grow into the ground and send out a new root system, creating a natural arch. This characteristic makes it the only maple capable of layering.

It is occasionally cultivated outside its native range as an ornamental tree, from Juneau, Alaska[6] and Ottawa, Ontario[7] to Huntsville, Alabama,[8] and also in northwestern Europe.[9]

Uses

Various birds and mammals eat the seeds of this species.[10]

References

"Acer circinatum". IUCN Red List of Threatened Species. 2019. 2019. Retrieved 16 June 2019.
The Plant List, Acer circinatum Pursh
Plants of British Columbia: Acer circinatum
Jepson Flora: Acer circinatum
Ashley, A. & Ashley, P. (1990). The Canadian Plant Sourcebook. Cheriton Graphics, Ottawa, Ontario, Canada.
Downtown Juneau Tree Guide Archived 2007-08-18 at the Wayback Machine
Buckley, A. R. (1980). Trees and Shrubs of the Dominion Arboretum. Research Branch, Agriculture Canada, Ottawa.
University of Alabama, Huntsville: Oregon Vine Maple at UAH Arboretum Archived February 24, 2007, at the Wayback Machine
Rushforth, K. (1999). Trees of Britain and Europe. Collins ISBN 0-00-220013-9.
Whitney, Stephen (1985). Western Forests (The Audubon Society Nature Guides). New York: Knopf. p. 392. ISBN 0-394-73127-1.

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