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建始槭Acer henryi

时间:2013-07-15 16:40来源:未知 作者:徐晔春 点击:
建始槭,Acer henryi,享利槭,三叶槭,三叶枫






中文名(Chinese Name):建始槭
学名(Scientific Name):Acer henryi Pax
英文名(English Common Name):
别名(Chinese Common Name):享利槭、三叶槭、三叶枫
异名(Synonym):Acer cissifolium subsp. henryi K. Koch;Acer henryi f. intermedium W. P. Fang;Crula henryi (Pax) Nieuwl.;Acer henryi var. serratum Pamp.;Acer stenobotrys Franch. ex W.P.Fang 
科属(Family & Genus):槭树科(Aceraceae)槭树属
形态特征(Description):落叶乔木,高约10米。树皮浅褐色。小枝圆柱形,当年生嫩枝紫绿色,有短柔毛,多年生老枝浅褐色,无毛。冬芽细小,鳞片2,卵形,褐色,镊合状排列。叶纸质,3小叶组成的复叶;小叶椭圆形或长圆椭圆形,长6-12厘米,宽3-5厘米,先端渐尖,基部楔形,阔楔形或近于圆形,全缘或近先端部分有稀疏的3-5个钝锯齿,顶生小叶的小叶柄长约1厘米,侧生小叶的小叶柄长3-5毫米,有短柔毛;嫩时两面无毛或有短柔毛,在下面沿叶脉被毛更密,渐老时无毛,主脉和1113对侧脉均在下面较在上面显著;叶柄长4-8厘米,有短柔毛。穗状花序,下垂,长7-9厘米,有短柔毛,常由2-3年无叶的小枝旁边生出,稀由小枝顶端生出,近于无花梗,花序下无叶稀有叶,花淡绿色,单性,雄花与雌花异株;萼片5,卵形,长1.5毫米,宽1毫米;花瓣5,短小或不发育;雄花有雄蕊4-6,通常5,长约2毫米;花盘微发育;雌花的子房无毛,花柱短,柱头反卷。翅果嫩时淡紫色,成熟后黄褐色,小坚果凸起,长圆形,长1厘米,宽5毫米,脊纹显著,翅宽5毫米,连同小坚果长2-2.5厘米,张开成锐角或近于直立。果梗长约2毫米。花期4月,果期9月。
分布(Distribution):产山西南部、河南、陕西、甘肃、江苏、浙江、安徽、湖北、湖南、四川、贵州。生于海拔500-1500米的疏林中。
用途(Use):
引自中国植物志英文版FOC Vol. 11 Page 552
Acer henryi Pax, Hooker’s Icon. Pl. 19: t. 1896. 1889.
三叶枫 san ye feng| Aceraceae  | Acer
Acer cissifolium K. Koch subsp. henryi (Pax) A. E. Murray; A. henryi f. intermedium W. P. Fang; A. henryi var. serratum Pampanini; Crula henryi (Pax) Nieuwland.
Trees to 10 m tall, dioecious. Branchlets slender; winter buds small, scales ovate, pubescent. Leaves deciduous; petiole 5-10 mm, pubescent; leaf blade elliptic or oblong-elliptic, 6-12 × 3-5 cm, papery, both surfaces pubescent especially on veins abaxially when young, then glabrescent with only tufts of hairs at vein axils abaxially, 3-foliolate, margin entire or remotely serrate apically, apex acuminate or cuneate. Inflorescence pendulous, racemose, to 7 cm, pubescent. Flowers subsessile or sessile, yellow-green. Sepals 4, ovate, ciliate along margin. Petals 4, white, deciduous before anthesis. Stamens 4, glabrous, rudimentary in pistillate flowers. Disk amphistaminal, small. Ovary glabrous, rudimentary in staminate flowers; style glabrous; stigmas revolute. Fruiting pedicel ca. 2 mm. Nutlets convex, oblong, ca. 1 cm; wing including nutlet ca. 2.5 cm × 5 mm, wings spreading at 90° or erectly. Fl. Apr, fr. Sep.
Mixed forests; 500-1500 m. Anhui, Fujian, Gansu, Guizhou, Henan, Hubei, Hunan, Jiangsu, S Shaanxi, S Shanxi, Sichuan, Zhejiang.
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