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Comments

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One of us (Chang) believes that Acer pictum subsp. macropterum, subsp. mono, subsp. pictum, subsp. pubigerum, and subsp. tricuspis so closely resemble each other that they may be taken for one variable and widely distributed taxon. However, one of us (Chen) believes that some of the subspecies are good and differ in their distributions; while awaiting future results about their status, it is best to retain their subspecific status. de Jong notes that A. pictum is a very complex species requiring further study.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of China Vol. 11: 516, 517, 521 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of China @ eFloras.org
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Wu Zhengyi, Peter H. Raven & Hong Deyuan
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eFloras.org
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Description

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Trees to 20 m tall, andromonoecious. Bark gray. Branchlets slender, glabrous; winter buds subglobose, scales 4 pairs. Leaves deciduous; petiole 4-6 cm, slender, glabrous; leaf blade abaxially pale green, adaxially dark green, oblong, (8-)9-11(-12) × (4-)6-8(-12) cm, papery, abaxially glabrous except for yellowish or whitish hairs on veins or at vein axils, sometimes abaxially pubescent, adaxially glabrous, base truncate, subtruncate, or hastate, 3-, 5-, 7-, or 9-lobed; lobes triangular or ovate, margin entire, apex acuminate or subcaudate-acuminate. Inflorescence terminal, paniculate-corymbose, ca. 4 × 4 cm, glabrous, numerous flowered; peduncles 1-2 cm. Pedicel ca. 1 cm, glabrous. Sepals 5, greenish yellow, oblong, 2-8 mm, ciliate, apex obtuse. Petals 5, whitish, elliptic or elliptic-obovate, ca. 3 mm. Stamens 8, shorter than petals, glabrous. Ovary glabrous or glabrescent, rudimentary in staminate flowers; style very short, glabrous; stigmas revolute. Fruit yellowish when mature; nutlets flat, compressed, 1-1.3 cm × 8-10 mm; wing oblong, including nutlet 3-3.5 × 1-1.5 cm, wings spreading variously. Fl. Apr-May, fr. Sep. 2n = 26.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of China Vol. 11: 516, 517, 521 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of China @ eFloras.org
editor
Wu Zhengyi, Peter H. Raven & Hong Deyuan
project
eFloras.org
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eFloras

Distribution

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Anhui, Gansu, Hebei, Heilongjiang, Henan, Hubei, Hunan, Jiangsu, Jilin, Liaoning, Nei Mongol, Shaanxi, Shanxi, Sichuan, SE Xizang, Yunnan, Zhejiang [Japan, Korea, Mongolia, E Russia].
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of China Vol. 11: 516, 517, 521 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of China @ eFloras.org
editor
Wu Zhengyi, Peter H. Raven & Hong Deyuan
project
eFloras.org
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eFloras

Habitat

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Forests, usually in valleys, also cultivated; sea level to 3300 m.
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cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of China Vol. 11: 516, 517, 521 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of China @ eFloras.org
editor
Wu Zhengyi, Peter H. Raven & Hong Deyuan
project
eFloras.org
original
visit source
partner site
eFloras

Acer pictum

provided by wikipedia EN

Acer pictum, commonly known as yellow-paint maple,[3] is an Asian species of maple. It widespread across much of China as well as Korea, Japan, Mongolia, and eastern Russia.[4] Its natural habitat is in temperate forests.

Acer pictum is a deciduous tree up to 20 meters tall, with gray bark. Leaves are non-compound, thin, up to 12 cm wide and 12 cm across, toothless, with 3, 5, 7, or 9 lobes.[4]

Taxonomy

Acer pictum is taxonomically complex species, showing morphological variation that corresponds to different geographic regions. Treatments of this variation have ranged from recognizing entities at the species level, to uniting them all under an undivided A. pictum. Further taxonomic study of this group is needed.[4][5] Five subspecies are provisionally recognized in the Flora of China.[4] These are:

  • Acer pictum subsp. macropterum - China
  • Acer pictum subsp. mono - China, Japan, Korea, Mongolia, and east Russia
  • Acer pictum subsp. pictum - Japan and Korea
  • Acer pictum subsp. pubigerum - China
  • Acer pictum subsp. tricuspis - China

References

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Acer pictum: Brief Summary

provided by wikipedia EN

Acer pictum, commonly known as yellow-paint maple, is an Asian species of maple. It widespread across much of China as well as Korea, Japan, Mongolia, and eastern Russia. Its natural habitat is in temperate forests.

Acer pictum is a deciduous tree up to 20 meters tall, with gray bark. Leaves are non-compound, thin, up to 12 cm wide and 12 cm across, toothless, with 3, 5, 7, or 9 lobes.

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