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绿绒蒿属的系统演化及地理分布

THE SYSTEMATIC EVOLUTION AND THE GEOGRAPHICAL DISTRIBUTION OF MECONOPSIS VIG.

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【作者】 庄璇;

【Author】 Chuang Hsuan (Kunming Institute of Botany, Academia Sinica)

【机构】 中国科学院昆明植物研究所;

【摘要】 <正> 本属分2个亚属、5个组和9个系(图1)。 椭果绿绒蒿系(Ser.Chelidonifoliae Prain)是最原始的类群,这群植物茎高大具分枝,有基生叶和茎生叶,数花组成聚伞状圆锥花序,须根纤维状,花黄色等原始特征,它们生长在温暖湿润的林下或灌丛下,海拔高度相对较低;2种,分布于湖北西部、陕西西南部、四川东北部至西南部、云南东北部这一和本属集中分布区比较独立的范围内,它们是典型的华中成份。

【Abstract】 The systematical evolution of genus Meconopsis, first of all, depends upon the alternation of environmental conditions from a low altitude to a higher altitude, from the habitats under the forests to meadows and even to alpine desetrs. Corresponding to these systematical alternations they change morphologically from branched stems to unbranched stems and finally, to no stem at all, from panicles to brateate raceme to bractless raceme and finally, to simple flowered basal scapes. This amply reveals the dialectic unity between plants and environments in the long-term historical development.The western China with neighbouring Himalayan regions is the center of distribution of this genus.The old montanous region of Central China and its neighbouring region may be its birthplace, while on the margin of Qinghai-Xizang Plateau may form a secondary center of development. At the same time, the present paper also makes a discussion on the close relationship between the Himalayan upheaval and the origin and development of species groups of the same genus.

  • 【文献出处】 云南植物研究 ,Acta Botanica Yunnanica , 编辑部邮箱 ,1981年02期
  • 【被引频次】22
  • 【下载频次】367
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