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水栒子Cotoneaster multiflorus

时间:2013-11-06 13:46来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ): 水栒子 学名( Scientific Name ): Cotoneaster multiflorus Bunge 英文名( English Common Name ): cotoneaster 别名( Chinese Common Name ): 栒子木、多花栒子 异名( Synonym ): Cotoneaster reflexus Carrire Cot
中文名(Chinese Name):水栒子
学名(Scientific Name):Cotoneaster multiflorus Bunge
英文名(English Common Name):cotoneaster
别名(Chinese Common Name):栒子木、多花栒子
异名(Synonym):Cotoneaster reflexus Carrière  Cotoneaster magnificus J. Fryer et B. Hylmo
科属(Family & Genus):蔷薇科(Rosaceae)栒子属
形态特征(Description):落叶灌木,高达4米;枝条细瘦,常呈弓形弯曲,小枝圆柱形,红褐色或棕褐色,无毛,幼时带紫色,具短界毛,不久脱落。叶片卵形或宽卵形,长2-4厘米,宽1.5-3厘米,先端急尖或圆钝,基部宽楔形或圆形,上面无毛,下面幼时稍有绒毛,后渐脱落;叶柄长3-8毫米,幼时有柔毛,以后脱落;托叶线形,疏生柔毛,脱落。花多数,约5-21朵,成疏松的聚伞花序,总花梗和花梗无毛,稀微具柔毛;花梗长4-6毫米;苞片线形,无毛或微具柔毛;花直径1-1.2厘米;萼筒钟状,内外两面均无毛;萼片三角形,先端急尖,通常除先端边缘外,内外两面均无毛;花瓣平展,近圆形,直径约4-5毫米,先端圆钝或微缺,基部有短爪,内面基部有白色细柔毛,白色;雄蕊约20,稍短于花瓣;花柱通常2,离生,比雄蕊短;子房先端有柔毛。果实近球形或倒卵形,直径8毫米,红色,有1个由2心皮合生而成的小核。花期5-6月,果期8-9月。
分布(Distribution):产黑龙江、辽宁、内蒙古、河北、山西、河南、陕西、甘肃、青海、新疆、四川、云南、西藏,生于海拔1200-3500米沟谷、山坡杂木林中。俄罗斯及亚洲中西部均有。
用途(Use):高大灌木,生长旺盛,夏季密着白花,秋季结红色果实,经久不凋,可作观赏植物。近年试作苹果砧木,有矮化之效。
引自中国植物志英文版:FOC Vol. 9 Page 94      
Cotoneaster multiflorus Bunge in Ledebour, Fl. Altaic. 2: 220. 1830.
水栒子 shui xun zi| Rosaceae  | Cotoneaster
Shrubs deciduous, erect, (0.5–)4 m tall. Branchlets arching, reddish brown or brownish, terete, slender, initially pubescent, soon glabrescent. Petiole 3–8(–10) mm, initially pilose, glabrate; stipules linear, 2.5–5 mm, initially sparsely pilose, glabrate; leaf blade ovate to broadly ovate, (1.5–)2–4(–5) × (1.2–)1.5–3(–4) cm, midvein raised abaxially and impressed adaxially, abaxially pilose, glabrescent, adaxially glabrous, base broadly cuneate or rounded, apex acute or obtuse. Corymbs lax, 5–21-flowered; rachis and pedicels glabrous, rarely slightly puberulous; bracts linear, 2–4 mm, glabrous or slightly puberulous. Pedicel 4–6 mm. Flowers 1–1.2 cm in diam. Hypanthium campanulate, abaxially glabrous. Sepals triangular, 1.5–2 × 2–2.5 mm, apex acute. Petals spreading, white, suborbicular, 4–5 mm in diam., adaxially white puberulous near base, base shortly clawed, apex obtuse or emarginate. Stamens ca. 20, slightly shorter than petals. Ovary pilose apically; styles usually 2, free, not exceeding stamens. Fruit red or purplish red, subglobose or obovoid, (5–)7–8(–12) mm in diam.; pyrenes 2, united into 1. Fl. May–Jun, fr. Aug–Sep. 2n = 68.
River valleys, dense and mixed forests on slopes, forest margins, thickets, stream sides; 1200--3500 m. Gansu, Hebei, Heilongjiang, Henan, Hubei, Liaoning, Nei Mongol, Qinghai, Shaanxi, Shanxi, Sichuan, Xinjiang, Xizang, Yunnan [Russia; C and SW Asia].
 


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