| 摘要: |
| 紫距淫羊藿为根据少量栽培个体描述的中国特有种,狭域分布于湖南省天平山,自发表以来未见后续形态学研究。为了掌握紫距淫羊藿形态变异式样并为该物种及其近缘种的分类提供依据,该研究在模式产地湖南省桑植县天平山,于花果期开展野外居群的形态观测,对紫距淫羊藿主要性状进行变异分析以及形态描述的完善或修订,并提供了该物种的形态图片资料。结果表明:基于野外观测,紫距淫羊藿主要形态性状的变异范围均远超出物种发表原始文献的描述,如株高12.0～68.0 cm,大幅度高于原始描述的12 cm; 居群内结节状根茎和细长根茎并存,且两种类型的个体数量相当; 其余性状,如叶长、叶宽、花序轴长、花色等都呈现丰富变异。此外,还补充描述了紫距淫羊藿的果实和种子的性状,蓇葖果长8～13 mm,内含种子2～11粒,种子具油质体。因此,分类学描述应重视野外观察,特别要注意个体间的变异并进行性状分析,这是分类研究的基础。 |
| 关键词: 紫距淫羊藿, 特有种, 形态变异, 补充, 修订 |
| DOI：10.11931/guihaia.gxzw201903045 |
| 分类号:Q949 |
| 文章编号:1000-3142(2020)04-0452-10 |
| Fund project:国家自然科学基金(31360036); 江西省自然科学基金(20181BAB205075); 江西省青年科学家(井冈之星)培养对象计划项目(20133BCB23024); 江西中医药大学中药学一流学科科研启动项目(JXSYLXK-ZHYAO023)[Supported by the National Natural Science Foundation of China(31360036); Natural Science Foundation of Jiangxi Province(20181BAB205075); Yong Scientists Fellowship of Jiangxi Province(20133BCB23024); Jiangxi University of Traditional Chinese Medicine First-Class Scientific Research Progrom of Pharmacy(JXSYLXK-ZHYAO023)]。 |
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| Morphological variation pattern and supplementary description of Epimedium epsteinii |
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HE Yiming, HUANG Hua, JIANG Yong, LI Renqing, XU Yanqin*
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College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
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| Abstract: |
| Epimedium epsteinii, a species endemic to China, and distributes in Tianping Mountain of Hunan Province, which was described based on several cultivated individuals that. No subsequent morphological observation has been conducted since its publication. In order to obtain the accurate and comprehensive morphological variation of E. epsteinii and to provide a basis for clarifying the taxonomic relation of this species and its allied taxa, morphological variation analysis and supplementary description of E. epsteinii were done through the field investigation conducted in flowering period, based on a population in Tianping Mountain(type locality)of Sangzhi County, Hunan Province. The results are as follows: The variation range of the main characters of E. epsteinii is far beyond the original descriptions. For example, the height of flowering stems is 12.0-68.0 cm, which is significantly higher than the original description of 12 cm; Both short, compact rhizomes and long creeping rhizomes are observed within the population, and the individuals of each type are almost equal in number; The other characters, such as length and width of middle leaflet, length of inflorescence and flower colour are present abundant variation; In addition, the fruit and seed characters were described for the first time. Follicles are about 8-13 mm long and containing 2-11 seeds, which with a large oily caruncle(elaisome)attached. Furthermore, photos on the morphology of living plants in the wild are provided to fill the gap of absence of colour illustration of E. epsteinii in extant literature. It is the first very important thing for taxonomic study to pay more attention to taxonomic description after field investigation, especially the analysis of individual variation. |
| Key words: Epimedium epsteinii, endemic species, morphological variation, supplementary description, revision |
