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甘肃山楂 Crataegus kansuensis

时间:2013-11-07 11:23来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ): 甘肃山楂 学名( Scientific Name ): Crataegus kansuensis Wils. 英文名( English Common Name ): 别名( Chinese Common Name ): 面旦子 异名( Synonym ): 科属( Family Genus ): 蔷薇科(Rosaceae)山楂属 形态
中文名(Chinese Name):甘肃山楂
学名(Scientific Name):Crataegus kansuensis Wils.
英文名(English Common Name):
别名(Chinese Common Name):面旦子
异名(Synonym):
科属(Family & Genus):蔷薇科(Rosaceae)山楂属
形态特征(Description):灌木或乔木,高2.5-8米;枝刺多,锥形,长约7-15毫米;小枝细,圆柱形,无毛,绿带红色,二年生枝光亮,紫褐色;冬芽近圆形,先端钝,无毛,紫褐色。叶片宽卵形,长4-6厘米,宽3-4厘米,先端急尖,基部截形或宽楔形,边缘有尖锐重锯齿和5-7对不规则羽状浅裂片,裂片三角卵形,先端急尖或短渐尖,上面有稀疏柔毛,下面中脉及脉腋有髯毛,老时减少,近于无毛;叶柄细,长1.8-2.5厘米,无毛;托叶膜质,卵状披针形,边缘有腺齿,早落。伞房花序,直径3-4厘米,具花8-18朵;总花梗和花梗均无毛,花梗长5-6毫米;苞片与小苞片膜质,披针形,长约3-4毫米,边缘有腺齿,早落;花直径8-10毫米;萼筒钟状,外面无毛;萼片三角卵形,长2-3毫米,约当萼筒之半,先端渐尖,全缘,内外两面均无毛;花瓣近圆形,直径3-4毫米,白色;雄蕊15-20;花柱2-3,子房顶端被绒毛,柱头头状。果实近球形,直径8-10毫米,红色或桔黄色,萼片宿存;果梗细,长1.5-2厘米;小核2-3,内面两侧有凹痕。花期5月,果期7-9月。
分布(Distribution):产甘肃、山西、河北、陕西、贵州、四川,生于海拔1000-3000米杂木林中、山坡阴处及山沟旁。
用途(Use):
引自中国植物志英文版:FOC Vol. 9 Page 116     
Crataegus kansuensis E. H. Wilson, J. Arnold Arbor. 9: 58. 1928.
甘肃山楂 gan su shan zha| Rosaceae  | Crataegus
Shrubs or small trees, 2.5–8 m tall, usually thorny; thorns many, ca. 0.7–1.5 cm. Branchlets greenish red, terete, slender, glabrous; buds purplish brown, suborbicular, glabrous. Stipules caducous, ovate-lanceolate, ca. 8 mm, membranous, subglabrous, margin glandular serrate, apex acute-acuminate; petiole 1.8–2.5 cm, glabrous; leaf blade broadly ovate, 4–6 × 3–4 cm, abaxially pubescent along veins and barbate in vein axils, later subglabrescent, adaxially sparsely pubescent, base truncate or broadly cuneate, margin sharply and doubly serrate, with 5–7 pairs of shallow lobes; lobes triangular-ovate, apex acute. Cormyb 3–4 cm in diam., 8–18-flowered: peduncle glabrous; bracts caducous, lanceolate, membranous. Pedicel 5–6 mm, glabrous. Flowers 8–10 mm in diam. Hypanthium campanulate, abaxially glabrous. Sepals triangular, 2–3 mm, both surfaces glabrous. Petals white, suborbicular, 5–6 × 3–4 mm. Stamens 15–20. Ovary tomentose apically, 2- or 3-loculed, with 2 ovules per locule; styles 2 or 3. Pome red or orangish yellow, subglobose, 8–10 mm in diam., glabrous; sepals persistent; pyrenes 2 or 3, with concave scars on both inner lateral sides. Fl. May, Jul–Sep. 2n = 34*.
Mixed forests, shaded slopes, stream sides; 1000--3000 m. Gansu, Guizhou, Hebei, Shaanxi, Shanxi, Sichuan.
 


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