中国大风子科植物的系统分类学研究

SYSTEMATIC TAXONOMY OF FLACOURTIACEAE FROM CHINA

  • 摘要: 回顾了大风子科(Flacourtiaceae)植物系统分类学及相关学科的研究历史,并展望了今后的研究任务。在形态学、木材解剖学、叶片脉序结构、气孔器微形态及花粉形态等特征的基础上讨论了国产本科各族间、属间的相互关系。认为大风子族(Pangieae)是本科国产类群中最原始的族。首次全面而系统地整理了国内各大标本馆(室)大风子科植物标本,记载了国产6族、12属、45种、6变种的研究历史文献,形态特征,地理分布,并且进行了详细的标本引证,其中包括2个新种——思茅山桂花(Bennettiodendron simaoense G.S.Fan sp.nov.)和福建山桐子(Idesia fujianensis G.S.Fan sp.nov.)和一个中国新记录种——淡黄绿嘉赐木(Casearia flavouirens Blume)。对一些有争议或有疑问的种进行了讨论,归并了2个学名,将上思本勒木(Bennettiodendron shangsiense X.X.Chun et J.Y.Luo)并入短柄山桂花(Bennettiodendron breuipes Merr.)中,将海南嘉赐木(Casearia aequilateralis Merr.)并入膜叶嘉赐木(Casearia membranaceaHance)中。对大风子属的概念进行了讨论,木材解剖学、脉序结构、气孔器微形态、花粉形态、植物化学成分等证据均支持广义大风子属(Hydnocarpus sensu lato)的概念,考虑到宏观形态上的差异,在国产本属下新组合两个亚属——龙角亚属了Taraktogenos和大风子亚属Hydnocarpus。以各属的代表种为基础,记载了国产各属的木材解剖特征、叶片脉序结构、气孔器微形态特征以及国产本科这三个方面的一般特征,讨论了这三方面在国产大风子科中系统分类学的意义,它们在科内系统演化中均显示了有力的证据。微形态学特征亦支持建立山拐枣族(Poliothyrsieae)。

     

    Abstract: This paper reviews the history of systematic taxonomy and some related branches of Flacour-tiaceae and looks forward to the future research.Relationship among tribes or genera of Flacour-tiaceae in China is discussed based on characteristics of macromorphology,xylem anatomy,leaf architecture,stomatal apparatus micromorphology,pollen morphology.According to the above analyses and the synthetical classification,Pangieae is suggested to be the most primitive tribe of Flacourtiaceae in China.Specimens of Flacourtiaceae in most large herbaria of China are examined and cited.6 tribes,12 genera,45 species,6 varieties including their research history,morphological characteristics and distributed areas are recorded,among which,2 new species are included;they are Idesia fujianensis G.S.Fan.sp.nov.and Bennettiodendron simaoense G.S.Fan Sp.nov..Moreover a new record species:Casearia flavovirens Blume is found;2 scientific names are reduced,i.e.Bennettiodendron shangsiense X.X.Chun et J.Y.Luo should be combined with Bennettiodendron brevipes Merr,and Casearia aequilateralis Merr.is examined to be a synonym of Casearia membranacea Hance.Strict definition of Hydnocarpus is discussed in detail.The author finds that evidences of xylem anatomy,leaf architecture,stomatal apparatus micromorphology,pollen morphology,phytochemistry support the generic name Hydnocarpus in broad sense,while Taraktogenos and Hydnocarpus are more reasonably reduced to subgenera under Hydnocarpus sensu lato.Based on their represented species,characteristics of xylem anatomy,leaf architecture,stomatal apparatus micromorphology of 12 flacourtiaceous genera and the family itself in China are recorded.Significance of the above three branches in systematic taxonomy of Flacourtiaceae from China are discussed,which play important roles in analyzing relationship and systematics of Flacourtiaceae in many respects and also approves to the establishment of tribe Poliothyrsieae.

     

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