紫薇Lagerstroemia indica

中文名(Chinese Name):紫薇
学名(Scientific Name):Lagerstroemia indica L.
英文名(English Common Name):crapemyrtle
别名(Chinese Common Name):痒痒树、百日红
异名(Synonym):Lagerstroemia chinensis Lam.  Murtughas india (L.) Kuntze  Lagerstroemia elegans Wall. ex Paxton  Lagerstroemia indica var. alba Ram. Goyena  Lagerstroemia minor Retz.  Lagerstroemia pulchra Salisb.  Murtughas indica (L.) Kuntze  Velaga globosa Gaertn.
科属(Family & Genus):千屈菜科(Lythraceae)紫薇属
形态特征(Description):落叶灌木或小乔木,高可达7米;树皮平滑,灰色或灰褐色;枝干多扭曲,小枝纤细,具4棱,略成翅状。叶互生或有时对生,纸质,椭圆形、阔矩圆形或倒卵形,长2.5-7厘米,宽1.5-4厘米,顶端短尖或钝形,有时微凹,基部阔楔形或近圆形,无毛或下面沿中脉有微柔毛,侧脉3-7对,小脉不明显;无柄或叶柄很短。花淡红色或紫色、白色,直径3-4厘米,常组成7-20厘米的顶生圆锥花序;花梗长3-15毫米,中轴及花梗均被柔毛;花萼长7-10毫米,外面平滑无棱,但鲜时萼筒有微突起短棱,两面无毛,裂片6,三角形,直立,无附属体;花瓣6,皱缩,长12-20毫米,具长爪;雄蕊36-42,外面6枚着生于花萼上,比其余的长得多;子房3-6室,无毛。蒴果椭圆状球形或阔椭圆形,长1-1.3厘米,幼时绿色至黄色,成熟时或干燥时呈紫黑色,室背开裂;种子有翅,长约8毫米。花期6-9月,果期9-12月。
分布(Distribution):我国北至吉林南至海南均有,原产亚洲,现广植于热带地区。
用途(Use):花色鲜艳美丽,花期长,寿命长,树龄有达200年的,现热带地区已广泛栽培为庭园观赏树,有时亦作盆景。花白色的称银薇 L. indica Linn. f. alba ( Nichols.) Rehd.,紫薇的木材坚硬、耐腐,可作农具、家具、建筑等用材;树皮、叶及花为强泻剂;根和树皮煎剂可治咯血、吐血、便血。
引自植物志英文版:FOC Vol. 13 Page 278, 279
Lagerstroemia indica Linnaeus, Sp. Pl., ed. 2. 1: 734. 1762.
紫薇 zi wei | Lythraceae  | Lagerstroemia
Lagerstroemia chinensis Lamarck; Murtughas indica (Linnaeus) Kuntze.
Shrubs or small trees, to 7 m tall. Branchlets slender, 4-angled or subalate, puberulous, glabrescent. Leaves sessile or with petiole to ca. 2 mm; leaf blade elliptic, oblong, obovate, or suborbicular, typically at least some suborbicular to obovate and mucronate, 2.5-7[-10] × 1.5-4 cm, papery to slightly leathery, glabrous or with slight indumentum on veins abaxially, lateral veins 3-7 pairs, base broadly cuneate to rounded, apex acute, obtuse with small mucro, or retuse. Panicles subpyramidal, 7-20 cm, puberulous, densely flowered. Floral tube 6-merous, 7-11 mm, smooth walled or obscurely to decidedly 6-ribbed, glabrous; sepals 3.5-5.5 mm, adaxially glabrous; annulus present; epicalyx absent. Petals purple, fuchsia, pink, or white, orbicular, 1.2-2 cm including claw 6-9 mm. Stamens 36-42, dimorphic. Ovary glabrous. Capsules ellipsoidal, 1-1.3 × 0.7-1.2 cm, 4-6-valved. Seeds including wing ca. 8 mm. Fl. Jun-Sep, fr. Sep-Nov. 2n = 48, 50.
Semishaded places, rich fields, wild or cultivated. Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hainan, Henan, Hubei, Hunan, Jiangxi, Jilin, Shandong, Shanxi, Sichuan, Taiwan, Yunnan, Zhejiang [Bangladesh, Bhutan, Cambodia, India, Indonesia, Japan, Laos, Malaysia, Myanmar, Nepal, Pakistan, Philippines, Singapore, Sri Lanka, Thailand, Vietnam; widely cultivated throughout these and other warm regions of the world].
紫薇Lagerstroemia indica

紫薇Lagerstroemia indica

紫薇Lagerstroemia indica

紫薇Lagerstroemia indica(责任编辑:徐晔春)

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