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喷雪花Spiraea thunbergii

时间:2013-11-06 14:52来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ): 喷雪花 学名( Scientific Name ): Spiraea thunbergii Siebold ex Blume 英文名( English Common Name ): Thunbergs meadowsweet 别名( Chinese Common Name ): 珍珠绣线菊、雪柳 异名( Synonym ): Awayus japonicus
中文名(Chinese Name):喷雪花
学名(Scientific Name):Spiraea thunbergii Siebold ex Blume
英文名(English Common Name):Thunberg's meadowsweet
别名(Chinese Common Name):珍珠绣线菊、雪柳
异名(Synonym):Awayus japonicus (Raf.) Raf. ex B.D.Jacks.
科属(Family & Genus):蔷薇科(Rosaceae)绣线菊属
形态特征(Description):灌木,高达1.5米;枝条细长开张,呈弧形弯曲,小枝有稜角,幼时被短柔毛,褐色,老时转红褐色,无毛;冬芽甚小,卵形,无毛或微被毛,有数枚鳞片。叶片线状披针形,长25-40毫米,宽3-7毫米,先端长渐尖。基部狭楔形,边缘自中部以上有尖锐锯齿,两面无毛,具羽状脉;叶柄极短或近无柄,长1-2毫米,有短柔毛。伞形花序无总梗,具花3-7朵,基部簇生数枚小形叶片;花梗细,长6-10毫米,无毛;花直径6-8毫米;萼筒钟状,外面无毛,内面微被短柔毛;萼片三角形或卵状三角形,先端尖,内面有稀疏短柔毛;花瓣倒卵形或近圆形,先端微凹至圆钝,长2-4毫米,宽2-3.5毫米,白色;雄蕊18-20,长约花1/3或更短;花盘圆环形,由10个裂片组成;子房无毛或微被短柔毛,花柱几与雄蕊等长。蓇葖果开张,无毛,花柱近顶生,稍斜展,具直立或反折萼片。花期4-5月,果期7月。
分布(Distribution):原产华东,现山东、陕西、辽宁等地均有栽培,供观赏用。日本也有分布。
用途(Use):花期很早,花朵密集如积雪,叶片薄细如鸟羽,秋季转变为桔红色,甚为美丽。
引自中国植物志英文版:FOC Vol. 9 Page 70      
Spiraea thunbergii Siebold ex Blume, Bijdr. Fl. Ned. Ind. 17: 1115. 1826.
珍珠绣线菊 zhen zhu xiu xian ju| Rosaceae  | Spiraea
Shrubs to 1.5 m. Branches spreading, arching, slender; branchlets brown to red-brown, angled, pubescent at fist, finally glabrous; buds ovoid, very small, with several scales, glabrous or puberulous. Petiole 1–2 mm, pubescent; leaf blade linear-lanceolate, 25–40 × 3–7 mm, glabrous on both surfaces, pinnately veined, base narrowly cuneate, margin sharply serrate above middle, apex long acuminate. Umbels sessile, with clustered leaves at base, 10–18 mm, 3–7-flowered; pedicels slender, 6–10 mm, glabrous. Flowers 6–8 mm in diam. Hypanthium campanulate, glabrous abaxially. Sepals triangular or ovate-triangular, 1.5–2 × 1–1.5 mm, erect or reflexed in fruit, apex acute. Petals white, obovate to suborbicular, 2–4 × 2–3.5 mm, glabrous, base shortly clawed, apex emarginate or obtuse. Stamens 18–20, to 1/3 as long as petals. Disk annular, 10-lobed. Carpels glabrous or puberulous; styles nearly equaling stamens. Follicles spreading, glabrous; styles subterminal, divergent. Fl. Apr–May, fr. Jul–Aug.
Native in E China; cultivated for ornament in Fujian, Jiangsu, Liaoning, Shaanxi, Shandong, Zhejiang, and other provinces [Japan].
 




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