Acer triflorum

Life-forms

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 triflorum
Name

Acer triflorum Kom., Trudy Imp. S.-Peterburgsk. Bot. Sada 18: 430 (1901).
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 Unpublished Ph.D. dissertation, The Pennsylvania State University.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.
Hsu, T.Z., Chen, Y.S., Jong, P.C.de, Oterdoom, H.J. & Chang, C.S. 2008. Acer. Pp. 537 in Wu, Zh.Y. , Raven, P.H. & Hong, D.Y. (eds.), Flora of China. Volume 11: Oxalidaceae through Aceraceae. Science Press, Beijing & Missouri Botanical Garden Press, St. Louis, ISBN 978-1-930723-73-3. efloras PDF Reference page.
Chang, C.S., Kim, H. & Chang, K.S. 2014. Provisional checklist of vascular plants for the Korea peninsula flora (KPF). 563 p. Seoul: T.B. Lee Herbarium. PDF Reference page.

Links

USDA, ARS, Germplasm Resources Information Network. Acer triflorum in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 08-Apr-12.
Govaerts, R. et al. 2020. Acer triflorum in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2020 January 5. Reference page.
International Plant Names Index. 2020. Acer triflorum. Published online. Accessed: 5 January 2020.

Vernacular names
Deutsch: Dreiblütiger Ahorn
English: Chosen Maple
español: Arce florado
suomi: Huntuvaahtera
français: Érable à trois fleurs
magyar: Háromvirágú juhar
한국어: 복자기
русский: Клён трёхцветковый
中文: 三花槭

Acer triflorum, the three-flowered maple, is a species of maple native to hills of northeastern China (Heilongjiang, Jilin, Liaoning) and Korea.

It is a deciduous tree that reaches a height of about 25 metres (82 ft) but is usually smaller.[1][2] It is a trifoliate maple related to such other species as Manchurian Maple (Acer mandshuricum) and Paperbark Maple (Acer griseum). It has yellowish-brown exfoliating bark that peels in woody scales rather than papery pieces like Acer griseum.[2]

The leaves have a 2.5–6 centimetres (0.98–2.36 in) petiole and three leaflets; the leaflets are 4–9 centimetres (1.6–3.5 in) long and 2–3.5 centimetres (0.79–1.38 in) broad, with serrated margins, the central leaflet the same size as or slightly larger than the two side leaflets. The flowers are yellow, produced in small corymbs of three small flowers each, hence the name. The samaras are 3.5–4.5 centimetres (1.4–1.8 in) long and 1.3–2 cm broad, hairy, the nutlet with a woody shell.[1][2]

Even more than its relatives, three-flower maple has spectacular fall colour that may include brilliant orange, scarlet, purple and gold. It is one of the few trees to develop good fall colour in shade.[3]
Cultivation

The species was first introduced to cultivation in 1923. Although common in maple collections, it is rarely seen in cultivation outside of arboreta.

It grows at a slow to moderate rate and prefers moist, well drained soil; growth is often shrub-like in cultivation. It is relatively tolerant of drought and clay compared to its close relatives. It does not tolerate wet or over-compacted soil.[3] Propagation is similar to that required for Acer griseum and the number of viable seeds is likewise very small.[2]

In Great Britain, the largest specimens are up to 13 m (43 ft) tall, and 60 cm (24 in) trunk diameter (Tree Register of the British Isles). It has gained the Royal Horticultural Society's Award of Garden Merit.[4] In the United States, mature specimens can be seen at Arnold Arboretum in Boston, Massachusetts.
References

Xu, T.-z., Chen, Y., de Jong, P. C., & Oterdoom, H. J. Flora of China: Aceraceae (draft) Archived September 25, 2006, at the Wayback Machine
van Gelderen, C.J.; van Gelderen, D.M. (1999). Maples for Gardens: A Color Encyclopedia.
"NCSi factsheet: Acer triflorum". Archived from the original on 2012-02-05. Retrieved 2006-11-27.
"RHS Plant Selector - Acer trifolium". Retrieved 23 February 2020.