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Acer rufinerve5

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 rufinerve

Acer rufinerve Siebold & Zucc., Abh. Math.-Phys. Cl. Königl. Bayer. Akad. Wiss. 4(2): 155 (1845).

Abhandlungen der Mathematisch-Physikalischen Classe der Königlich Bayerischen Akademie der Wissenschaften 4 (2): 155 (1845).
USDA, ARS, Germplasm Resources Information Network. Acer rufinerve in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 08-Apr-12.

Vernacular names
English: Honshu Maple
日本語: ウリハダカエデ
polski: Klon rdzawy

Acer rufinerve, the grey-budded snake-bark-maple,[4] redvein maple or Honshū maple (Japanese: ウリハダカエデ urihadakaede, "melon-skin maple"), is a species of tree in the snakebark maple group, related to Acer capillipes (Kyushu maple). It is native to mountain forests of Japan, on Honshū, Kyūshū and Shikoku.[5][6][7][8]

The Latin and English names rufinerve and "redvein" refer to the reddish down on the veins. The Japanese name urihadakaede (melon-skin) refers to the bark pattern.[5][6][7][9]
Fruiting raceme

It is a small deciduous tree growing to a height of 8–15 m, with a trunk up to 40 cm diameter. The bark on young trees is smooth, olive-green with regular narrow vertical pale green to greyish stripes and small greyish lenticels; on old trees, it becomes rough and grey.

The leaves are three-lobed (occasionally five-lobed with two additional small basal lobes), double serrated, 8–16 cm long and 6–16 cm broad, matt to sub-shiny dark green above, paler below with small tufts of rusty hair on the veins when young, becoming glabrous when mature; the petiole is greenish (rarely pinkish), 3–5 cm long. The leaves turn to bright orange or red in the autumn.

The flowers are produced in racemes 10 cm long, each flower 8–10 mm diameter, with five yellow to greenish-yellow sepals and petals; it is dioecious, with male and female flowers on separate trees.

The fruit is a paired samara 2–3 cm long with rounded nutlets.

It can be distinguished from the related Acer capillipes with which it often occurs, by the green petioles, the rufous hairs on the underside of the leaves (contrasting with the hairless or only thinly hairy A. capillipes leaves), and in flowering earlier in spring at the same time as the leaves appear.[6]

This is one of the most commonly planted snakebark maples, and is a hardy, fast grower. It does not display much variation as a species but a notable cultivar is 'Erythrocladum' with yellow-green in both its leaves and the stripes of its bark. Variegated cultivars include 'Albolimbatum' and 'Hatsuyaki'.[7][10] 'Winter Gold' has bright golden-yellow bark.[11]

Harvey-Brown, Y. (2020). "Acer rufinerve". IUCN Red List of Threatened Species. 2020: e.T193861A2287185. doi:10.2305/IUCN.UK.2020-1.RLTS.T193861A2287185.en. Retrieved 12 May 2021.
The International Plant Names Index
The Plant List, Acer rufinerve Siebold & Zucc.
BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
Kobe city: Acer rufinerve Archived 2007-11-07 at the Wayback Machine (in Japanese; google translation)
Kanagawa Prefecture trees and shrubs: Acer rufinerve Archived 2009-10-24 at WebCite (in Japanese; google translation). Archived 2009-10-24.
van Gelderen, C. J. & van Gelderen, D. M. (1999). Maples for Gardens: A Color Encyclopedia
"Acer rufinerve". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 2017-12-24.
Rushforth, K. (1999). Trees of Britain and Europe. Collins ISBN 0-00-220013-9.
Hort Net: 'Hatsuyaki'
"Acer rufinerve 'Winter Gold' | grey snake-bark maple 'Winter Gold'/RHS Gardening". Retrieved 2021-05-12.

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