Difference between revisions of "Acer truncatum"

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{{SPlantbox
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|familia=Aceraceae
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|genus=Acer
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|species=truncatum
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|common_name=Shantung maple, Shandong Maple
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|name_ref=Flora - A Gardener's Encyclopedia
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|habit=tree
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|habit_ref=Flora - A Gardener's Encyclopedia
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|Min ht box=25
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|Min ht metric=ft
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|Max ht box=35
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|Max ht metric=ft
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|height_ref=Flora - A Gardener's Encyclopedia
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|Min wd box=18
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|Min wd metric=ft
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|Max wd box=25
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|Max wd metric=ft
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|width_ref=Flora - A Gardener's Encyclopedia
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|origin=NE China, Korea
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|lifespan=perennial
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|life_ref=Flora - A Gardener's Encyclopedia
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|exposure=sun
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|sun_ref=Flora - A Gardener's Encyclopedia
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|features=flowers
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|flower_season=early spring, mid spring, late spring
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|flower_ref=Flora - A Gardener's Encyclopedia
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|Min Temp Num=-40
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|Temp Metric=°C
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|min_zone=5
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|usda_ref=Flora - A Gardener's Encyclopedia
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|max_zone=8
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|sunset_zones=1-9, 14-23, 32, 34-43
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|image=Acer truncatum Leaf.jpg
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|image_width=240
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}}
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'''''Acer truncatum''''' ('''Shantung Maple''', '''Shandong Maple''', or '''Purpleblow Maple''') is a [[maple]] native to northern [[China]] and [[Korea]].<ref name=focd>Flora of China (draft): [http://flora.huh.harvard.edu/china/mss/volume11/Aceraceae-AGH_finishing.htm ''Acer truncatum'']</ref>
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It is a medium-sized [[deciduous]] [[tree]] growing to 15 m tall with a broad, rounded crown. The [[bark]] is smooth on young trees, becoming shallowly ridged with age. The [[leaf|leaves]] are opposite, [[leaf shape|palmate]]ly lobed with five lobes, 5-12 cm long and 7-11 cm broad, with a 3-10 cm petiole; the lobes are usually entire, but occasionally with a pair of teeth on the largest central lobe, and the margin is often wavy. The petiole bleeds a milky [[latex]] when broken. The [[flower]]s are in [[corymb]]s, yellow-green with five petals 5-7 mm long; flowering occurs in early spring. The [[fruit]] is a double [[Samara (fruit)|samara]] with two winged [[seed]]s, the seeds are disc-shaped, slightly flattened, 13-18 mm across. The wings are 2 cm long, widely spread, approaching a 180° angle. The bark is greenish-grey, smooth in young trees, becoming shallowly grooved in mature.<ref name=focd/><ref name=rhs/><ref name=rushforth/>
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It is closely related to, and often difficult to distinguish from, ''[[Acer amplum]]'', ''[[Acer cappadocicum]]'', and ''[[Acer pictum subsp. mono]]'', which replace it further south and west in China, and in Japan. From ''Acer cappadocicum'' it is best distinguished by the shoots which turn brown by their first winter, not remaining green for several years.<ref name=rushforth/> From ''Acer mono'' (syn. ''A. pictum'' auct. non Thunb.) it is best distinguished by the larger, thicker (less flattened) seeds. ''Acer truncatum'' is very unusual among maples in showing [[hypogeal]] germination.<ref name=focd/>
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Shantung Maple is grown as an [[ornamental plant]] in [[Europe]] and [[North America]].<ref name=rhs>Huxley, A., ed. (1992). ''New RHS Dictionary of Gardening''. Macmillan ISBN 0-333-47494-5.</ref><ref name=rushforth>Rushforth, K. (1999). ''Trees of Britain and Europe''. Collins ISBN 0-00-220013-9.</ref>
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A number of [[cultivar]]s have been selected, including 'Akikaze Nishiki' with [[variegation|variegated]] leaves, 'Fire Dragon' with very bright autumn colour.<ref name=rhs/> The cultivar 'Keithsform' (<tt>Norwegian Sunset</tt>) is a [[Hybrid (biology)|hybrid]] between ''Acer truncatum'' and ''[[Acer platanoides]]'' (Norway Maple).<ref>Oregon State University: [http://oregonstate.edu/dept/ldplants/acer-ns.htm Norwegian Sunset]</ref>
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Acer truncatum, Bunge. Tree, to 25 ft.: lvs. deeply 5-lobed and mostly truncate at the base, 2 1/2-4 in. across, glabrous, light green, purplish when unfolding; lobes acuminate, setosely pointed, entire or sometimes the middle ones 3-lobed: fr. with yellow, short and broad wings, spreading at right or obtuse angles. N. China. S.T.S. 1:76.—Hardy tree, with handsome, dense foliage.
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Acer truncatum, Bunge. Tree, to 25 ft.: lvs. deeply 5-lobed and mostly truncate at the base, 2 1/2-4 in. across, glabrous, light green, purplish when unfolding; lobes acuminate, setosely pointed, entire or sometimes the middle ones 3-lobed: fr. with yellow, short and broad wings, spreading at right or obtuse angles. N. China. —Hardy tree, with handsome, dense foliage.{{SCH}}
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__NOTOC__{{Plantbox
 
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| name = ''Acer truncatum''
 
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| common_names = Shandong Maple
 
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| growth_habit = deciduous tree
 
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| high = 10-15 m
 
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| wide = 40-80 cm trunk diameter
 
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| origin = NE China, Korea
 
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| poisonous =    <!--- indicate parts of plants which are known/thought to be poisonous -->
 
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| lifespan = perennial
 
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| exposure =    <!--- sun, part-sun, semi-shade, shade, indoors, bright filtered (you may list more than 1) -->
 
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| water =    <!--- frequent, regular, drought tolerant, let dry then soak -->
 
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| features =    <!--- flowers, fragrance, naturalizes, invasive -->
 
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| hardiness = -40[[Celsius|°C]]
 
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| bloom =    <!--- seasons which the plant blooms, if it is grown for it's flowers -->
 
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| usda_zones =    <!--- eg. 8-11 -->
 
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| sunset_zones = 1-9, 14-23, 32, 34-43
 
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| color = IndianRed
 
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| image = Upload.png  <!--- Freesia.jpg -->
 
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| image_width = 240px    <!--- leave as 240px if horizontal orientation photo, or change to 180px if vertical -->
 
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| image_caption =    <!--- eg. Cultivated freesias -->
 
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|regnum = Plantae
 
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|unranked_divisio = Angiosperms
 
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|unranked_classis = Eudicots
 
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|unranked_ordo = Rosids
 
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|ordo = Sapindales
 
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|familia = Sapindaceae
 
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|genus = Acer
 
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|species = truncatum
 
 
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:''More information about this species can be found on the [[Acer|genus page]].''
 
:''More information about this species can be found on the [[Acer|genus page]].''
  
 
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Latest revision as of 21:18, 2 November 2010


Acer truncatum Leaf.jpg


Plant Characteristics
Habit   tree

Height: ⇕ 25 ft"ft" can not be assigned to a declared number type with value 25. to 35 ft"ft" can not be assigned to a declared number type with value 35.
Width: ⇔ 18 ft"ft" can not be assigned to a declared number type with value 18. to 25 ft"ft" can not be assigned to a declared number type with value 25.
Lifespan: ⌛ perennial
Origin: ✈ NE China, Korea
Bloom: ❀ early spring, mid spring, late spring
Cultivation
Exposure: ☼ sun
Features: ✓ flowers
Minimum Temp: ☃ -40°C-40 °F <br />233.15 K <br />419.67 °R <br />
USDA Zones: 5 to 8
Sunset Zones: 1-9, 14-23, 32, 34-43
Scientific Names

Aceraceae >

Acer >

truncatum >


Acer truncatum (Shantung Maple, Shandong Maple, or Purpleblow Maple) is a maple native to northern China and Korea.[1]

It is a medium-sized deciduous tree growing to 15 m tall with a broad, rounded crown. The bark is smooth on young trees, becoming shallowly ridged with age. The leaves are opposite, palmately lobed with five lobes, 5-12 cm long and 7-11 cm broad, with a 3-10 cm petiole; the lobes are usually entire, but occasionally with a pair of teeth on the largest central lobe, and the margin is often wavy. The petiole bleeds a milky latex when broken. The flowers are in corymbs, yellow-green with five petals 5-7 mm long; flowering occurs in early spring. The fruit is a double samara with two winged seeds, the seeds are disc-shaped, slightly flattened, 13-18 mm across. The wings are 2 cm long, widely spread, approaching a 180° angle. The bark is greenish-grey, smooth in young trees, becoming shallowly grooved in mature.[1][2][3]

It is closely related to, and often difficult to distinguish from, Acer amplum, Acer cappadocicum, and Acer pictum subsp. mono, which replace it further south and west in China, and in Japan. From Acer cappadocicum it is best distinguished by the shoots which turn brown by their first winter, not remaining green for several years.[3] From Acer mono (syn. A. pictum auct. non Thunb.) it is best distinguished by the larger, thicker (less flattened) seeds. Acer truncatum is very unusual among maples in showing hypogeal germination.[1]

Shantung Maple is grown as an ornamental plant in Europe and North America.[2][3]

A number of cultivars have been selected, including 'Akikaze Nishiki' with variegated leaves, 'Fire Dragon' with very bright autumn colour.[2] The cultivar 'Keithsform' (Norwegian Sunset) is a hybrid between Acer truncatum and Acer platanoides (Norway Maple).[4]


Read about Acer truncatum in the Standard Cyclopedia of Horticulture 

Acer truncatum, Bunge. Tree, to 25 ft.: lvs. deeply 5-lobed and mostly truncate at the base, 2 1/2-4 in. across, glabrous, light green, purplish when unfolding; lobes acuminate, setosely pointed, entire or sometimes the middle ones 3-lobed: fr. with yellow, short and broad wings, spreading at right or obtuse angles. N. China. —Hardy tree, with handsome, dense foliage.CH


The above text is from the Standard Cyclopedia of Horticulture. It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article. Click on "Collapse" in the header to hide this text.


More information about this species can be found on the genus page.

Cultivation

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Propagation

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Pests and diseases

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Cultivars

Gallery

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References

External links


  1. ↑ 1.0 1.1 1.2 Flora of China (draft): Acer truncatum
  2. ↑ 2.0 2.1 2.2 Huxley, A., ed. (1992). New RHS Dictionary of Gardening. Macmillan ISBN 0-333-47494-5.
  3. ↑ 3.0 3.1 3.2 Rushforth, K. (1999). Trees of Britain and Europe. Collins ISBN 0-00-220013-9.
  4. ↑ Oregon State University: Norwegian Sunset
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