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中甸山楂 Crataegus chungtienensis

时间:2013-11-07 12:52来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ): 中甸山楂 学名( Scientific Name ): Crataegus chungtienensis W. W. Smith 英文名( English Common Name ): 别名( Chinese Common Name ): 异名( Synonym ): 科属( Family Genus ): 蔷薇科(Rosaceae)山楂属 形
中文名(Chinese Name):中甸山楂
学名(Scientific Name):Crataegus chungtienensis W. W. Smith
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):
科属(Family & Genus):蔷薇科(Rosaceae)山楂属
形态特征(Description):灌木,高达6米;小枝圆柱形,无毛或近于无毛,光亮紫褐色,疏生长圆形浅色皮孔;冬芽肥厚,卵形,先端圆钝或急尖,紫褐色,无毛。叶片宽卵形,长4-7厘米,宽3.5-5厘米,先端圆钝,基部圆形至宽楔形,边缘有细锐重锯齿,齿尖有腺,通常具3-4对浅裂片,稀基部1对分裂较深,上面近于无毛,下面疏生柔毛,沿叶脉较密;叶柄长1.2-2厘米,稀3厘米,无毛;托叶膜质,卵状披针形,长约8毫米,边缘有腺齿,无毛。伞房花序直径3-4厘米,具多花,密集;总花梗和花梗均无毛或近于无毛,花梗长4-6毫米;苞片膜质,线状披针形,长约5毫米,边缘有腺齿,无毛,早落;花直径约1厘米;萼筒钟状,外面无毛;萼片三角卵形,长约1毫米,比萼筒短约一半,先端钝,全缘,内外两面均无毛或在内面顶端微有柔毛;花瓣宽倒卵形,长约6毫米,宽约5毫米,白色;雄蕊20,比花瓣稍长;花柱2-3,稀1,基部无毛。果实椭圆形,长约8毫米,直径约6毫米,红色;萼片宿存,反折;小核1-3,两侧有凹痕。花期5月,果期9月。
分布(Distribution):产云南,生于海拔2500-3500米山溪边杂木林或灌木丛中。
用途(Use):
引自中国植物志英文版:FOC Vol. 9 Page 116     
Crataegus chungtienensis W. W. Smith, Notes Roy. Bot. Gard. Edinburgh. 10: 26. 1917.
中甸山楂 zhong dian shan zha| Rosaceae  | Crataegus
Shrubs to 6 m tall. Branchlets grayish brown, terete, glabrous or subglabrous, with sparse, oblong lenticels; buds purplish brown, ovoid, glabrous. Stipules ovate-lanceolate, ca. 8 mm, membranous, glabrous, margin glandular serrate, apex acuminate; petiole 1–1.2, rarely to 3 cm, glabrous; leaf blade broadly ovate, 4–7 × 3.5–5 cm, abaxially sparsely pubescent, densely so along veins, adaxially subglabrous, base rounded to broadly cuneate, margin sharply doubly serrate, with 2 or 3(or 4) pairs of lobes, rarely parted near base, apex obtuse. Corymb 3–4 cm in diam., many flowered; peduncle glabrous or subglabrous; bracts caducous, linear-lanceolate, membranous. Pedicel 4–6 mm, glabrous or subglabrous. Flowers ca. 1 cm in diam. Hypanthium campanulate, abaxially glabrous. Sepals triangular-ovate, ca. 1 mm, both surfaces glabrous. Petals white, broadly obovate, ca. 6 × 5 mm. Stamens 20, slightly longr than petals. Styles (1 or)2 or 3, glabrous. Pome red, ellipsoid, ca. 6 mm in diam., glabrous; sepals persistent, reflexed; pyrenes 1–3, with concave scars on both inner sides. Fl. May, fr. Sep.
Mixed stream side forests, among shrubs; 2500--3500 m. NW Yunnan (Zhongdian Xian).
 


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