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 青楷枫

来自 植物智 的图片

中文名称:青楷枫

拉丁学名:Acer tegmentosum Maxim.

界:植物界

门纲:被子植物门、

双子叶植物纲

亚纲:原始花被亚纲

目科:无患子目、

科:槭树科

属:槭树属

英文名:Acer tegmentosum Maxim.

青楷枫,学名 Acer tegmentosum Maxim.,属于槭树科槭树属落叶乔木,Acer tegmentosum Maximowicz, Bull. Cl. Phys.-Math. Acad. Imp. Sci. Saint-Pétersbourg. 15: 125. 1856.,青楷枫 qing kai feng,Acer pensylvanicum Linnaeus var. tegmentosum (Maximowicz) Wesmael.,Trees to 15 m tall, andromonoecious. Bark dark gray. Branchlets glabrous, glaucous white during winter; winter buds blue, ellipsoid. Leaves deciduous; petiole 4-7(-13) cm, glabrous; leaf blade abaxially pale green, suborbicular-ovate, 10-12 × 7-9 cm, papery, abaxially with yellowish barbed hairs at vein axils, adaxially glabrous, primary veins 5, lateral veins 7 or 8 pairs, base rounded or subcordate,分布于黑龙江省吉林省辽宁省[1]

形态特征

落叶乔木,高10-15米。树皮灰色或深灰色,平滑,现裂纹。几小枝无毛,当年生小枝紫色或紫绿色,多年生枝黄绿色或灰褐色。冬芽椭圆形;鳞片浅褐色,无毛,叶纸质,近于圆形或卵形,长10-12厘米,宽7-9厘米,边缘有钝尖的重锯齿。

基部圆形或近于心脏形,3-7裂,通常5 裂;裂片三角形或钝尖形,先端常具短锐尖头;裂片间的凹缺通常钝尖,上面深绿色,无毛,下面淡绿色,脉腋有淡黄色的丛毛;主脉5条,由基部生出,侧脉7-8对,均在上面微现,在下面显著;

叶柄长4-7厘米,稀达13厘米,无毛。花黄绿色,杂性,雄花与两性花同株,赏成无毛的总状花序;萼片5,长圆形,先端钝形,长3毫米,宽1.5毫米;花瓣5,倒卵形,长3毫米,宽2毫米;雄蕊8;无毛,在两性花中不发育;

花盘无毛,位于雄蕊的内侧;子房无毛,在雄花中不发育,花柱短,柱头微被短柔毛,略弯曲。翅果无毛,黄褐色;小坚果微扁平;翅连同小坚果长2.5-3厘米,宽1-1.3厘米,张开成钝角或近于水平;果梗细瘦,长约5毫米。花期4月,果期9月。

Acer tegmentosum Maximowicz, Bull. Cl. Phys.-Math. Acad. Imp. Sci. Saint-Pétersbourg. 15: 125. 1856. 青楷枫 qing kai feng

Acer pensylvanicum Linnaeus var. tegmentosum (Maximowicz) Wesmael.

Trees to 15 m tall, andromonoecious. Bark dark gray. Branchlets glabrous, glaucous white during winter; winter buds blue, ellipsoid. Leaves deciduous; petiole 4-7(-13) cm, glabrous; leaf blade abaxially pale green, suborbicular-ovate, 10-12 × 7-9 cm, papery, abaxially with yellowish barbed hairs at vein axils, adaxially glabrous, primary veins 5, lateral veins 7 or 8 pairs, base rounded or subcordate, margin doubly serrulate, usually 3- or 5-lobed, rarely with 2 small basal lobes; lobes ovate, apex acuminate.

Inflorescence pendulous, racemose, 15-flowered, slender, glabrous. Pedicel ca. 5 mm, very slender. Sepals 5, oblong, ca. 3 × 1.5 mm, apex obtuse. Petals 5, obovate, ca. 3 × 2 mm. Stamens 8, glabrous, rudimentary in pistillate flowers. Disk glabrous, intrastaminal.

Ovary glabrous, rudimentary in staminate flowers; style short. Fruit yellowish brown, glabrous; nutlets flat or slightly convex; wing including nutlet 2.5-3 × 1-1.3 cm, wings spreading obtusely or nearly horizontally. Fl. Apr, fr. Sep. 2n = 26.

Coniferous and mixed forests; 500-1000 m. Heilongjiang, Jilin, Liaoning [Korea, E Russia].

标本鉴定信息

学名 Acer tegmentosum Maxim. 中文名 青楷枫

鉴定人 陈锋 鉴定时间 20091012

标本采集信息

采集人 M.Chen 采集号 621 采集时间 19330920

采集地 中国 海拔 100 生境 mountain slope 习性 物候期 无花有果

参考资料

  1. 青楷枫,植物智,引用日期 2021-02-25