少脉雀梅藤Sageretia paucicostata

中文名(Chinese Name):少脉雀梅藤
学名(Scientific Name):Sageretia paucicostata Maxim.
英文名(English Common Name):
别名(Chinese Common Name):对节木,对结刺、对结子
异名(Synonym):
科属(Family & Genus):鼠李科Rhamnaceae雀梅藤属Sageretia
形态特征(Description):直立灌木,或稀小乔木,高可达6米;幼枝被黄色茸毛,后脱落,小枝刺状,对生或近对生。叶纸质,互生或近对生,椭圆形或倒卵状椭圆形,稀近圆形或卵状椭圆形,长2.5-4.5厘米,宽1.4-2.5厘米,顶端钝或圆形,稀锐尖或微凹,基部楔形或近圆形,边缘具钩状细锯齿,上面无光泽,深绿色,下面黄绿色,无毛,侧脉每边2-3,稀4条,弧状上升,中脉在上面下陷,侧脉稍凸起,中脉和侧脉在下面凸起,网脉多少明显;叶柄长4-6,毫米,稀较长,被短细柔毛。花无梗或近无梗,黄绿色,无毛,单生或2-3个簇生,排成疏散穗状或穗状圆锥花序,常生于侧枝顶端或小枝上部叶腋,花序轴无毛;萼片稍厚,三角形,顶端尖;花瓣匙形,短于萼片,顶端微凹;雄蕊稍长于花瓣;花药圆形,子房扁球形,藏于花盘内,3室,每室具1胚珠,花柱粗短,柱头头状,3浅裂。核果倒卵状球形或圆球形,长5-8毫米,直径4-6毫米,成熟时黑色或黑紫色,具3分核;种子扁平,两端微凹。花期5-9月,果期7-10月。
分布(Distribution):产河北、河南、山西、陕西、甘肃、四川、云南、西藏东部(波密)。生于山坡或山谷灌丛或疏林中。
用途(Use):
引自中国植物志英文版:FOC Vol. 12 Page 134, 135
Sageretia paucicostata Maximowicz, Trudy Imp. S.-Peterburgsk. Bot. Sada. 11: 101. 1890.
少脉雀梅藤 shao mai que mei teng | Rhamnaceae  | Sageretia
Sageretia tibetica Pax & K. Hoffmann.
Shrubs or rarely small trees, erect, to 6 m tall. Young branches yellow tomentose, glabrescent; branchlets opposite or subopposite, spinescent. Leaves alternate or subopposite; petiole 4-6 mm, rarely longer, puberulent; leaf blade abaxially yellow-green, adaxially deep green, elliptic or obovate-elliptic, 2.5-4.5 × 1.4-2.5 cm, papery, both surfaces glabrous, lateral veins 2 or 3(or 4) pairs, major veins ± prominent abaxially, impressed adaxially, base cuneate or subrounded, margin serrulate, with hooklike recurved teeth, apex obtuse or rounded, rarely acute, slightly emarginate. Flowers sessile or subsessile, glabrous, solitary or 2- or 3-fascicled in lax spikes or spicate panicles, often inserted at ends of lateral branches or in axils of upper leaves; rachis glabrous. Sepals triangular, fleshy, apex acute. Petals spatulate, shorter than sepals, apex slightly emarginate. Stamens longer than petals; anthers globose. Ovary compressed-globose, immersed in disk, 3-loculed, with 1 ovule per locule; style short, thick; stigma large, 3-fid. Drupe black or black-purple when mature, obovoid-globose or globose, 5-8 mm in diam., with 3 pyrenes. Seeds compressed, emarginate at both ends. Fl. May-Sep, fr. Jul-Oct.
● Sparse forests on slopes or in valleys, thickets. Gansu, Hebei, Henan, Shaanxi, Shanxi, Sichuan, E Xizang, Yunnan.
Previous authors identified this as Sageretia pycnophylla in error; this species has large, not shiny leaves, 2 or 3 pairs of lateral veins, and longer petioles
少脉雀梅藤Sageretia paucicostata(责任编辑:徐晔春)

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