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庙台槭Acer miaotaiense

时间:2013-07-15 16:41来源:未知 作者:徐晔春 点击:
庙台槭,Acer miaotaiense,留坝槭






中文名(Chinese Name):庙台槭
学名(Scientific Name):Acer miaotaiense P. C. Tsoong
英文名(English Common Name):
别名(Chinese Common Name):留坝槭
异名(Synonym):Acer yangjuechi Fang et P. L. Chiu  Acer miaotaiense var. glabrum M. Chang Wang
科属(Family & Genus):槭树科Aceraceae槭属Acer
形态特征(Description):高大的落叶乔木,高20-25米。树皮深灰色、稍粗糙。小枝近于圆柱形,当年生枝紫褐色、无毛,多年生枝灰色,皮孔淡黄色、近于椭圆形。叶纸质,外貌近于阔卵形,长7-9厘米,宽6-8厘米,基部心脏形或近于心脏形、稀截形,常3-5裂,裂片卵形、先端短急锐尖,边缘微呈浅波状,裂片间的凹块钝形,上面深绿色,无毛,下面淡绿色有短柔毛,沿叶脉较密;初生脉3-5条和次生脉5-7对均在下面较在上面为显著;叶柄比较细瘦,长6-7厘米,基部膨大,无毛。花的特性未详。果序伞房状,连同长8-10毫米的总果梗在内约长5厘米,无毛;果梗细瘦,约长3厘米。小坚果扁平,长与宽均约8毫米,被很密的黄色绒毛;翅长圆形,宽8-9毫米,连同小坚果长2.5厘米,张开几成水平。花期不明,果期9月。
分布(Distribution):产陕西西南部和甘肃东南部。生于海拔1300-1600米的阔叶林中。
用途(Use):
引自中国植物志英文版:FOC Vol. 11 Page 517
Acer miaotaiense P. C. Tsoong, Bull. Misc. Inform. Kew. 1954: 83. 1954.
庙台枫 miao tai feng| Aceraceae  | Acer
Acer miaotaiense var. glabrum M. C. Wang; A. miyabei Maximowicz subsp. miaotaiense (P. C. Tsoong) A. E. Murray; A. yangjuechi W. P. Fang & P. L. Chiu.
Trees to 25 m tall. Bark brownish gray, rough. Branchlets glabrous; lenticels rounded; winter buds ellipsoid, scales 4. Leaves deciduous; petiole 6-7 cm, glabrous; leaf blade broadly ovate, (4-)7-9 × 5-8 cm, papery, abaxially pubescent, adaxially glabrous, primary veins 3-5, secondary veins 5-7 pairs, base cordate or subcordate, 3- or 5-lobed; lobes ovate, margin undulate, apex acute. Inflorescence terminal, corymbose-paniculate. Flowers yellow-green. Sepals 5, oblong, ca. 4 mm, margin ciliate. Petals 5, obovate-lanceolate, ca. as long as sepals. Stamens 8. Disk orbicular, margin 5-repand-lobed. Infructescence corymbose, glabrous; pedicel 3-6 mm; samara pubescent or rarely glabrous. Nutlets flat, ca. 8 mm in diam.; wing including nutlet 2-2.5 × 0.8-0.9 cm; wings spreading horizontally. Fl. May, fr. Sep.
● Mixed forests; 700-1600 m. SE Gansu, SW Henan, NW Hubei, S Shaanxi, Zhejiang.
This taxon is closely related to Acer miyabei Maximowicz; the bark, inflorescences, flowers, and fruit are very similar. For one of us (de Jong), A. miaotaiense is a subspecies of A. miyabei.
 
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