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Plant Diversity ›› 2014, Vol. 36 ›› Issue (04): 419-432.DOI: 10.7677/ynzwyj201413209

• 研究论文 •    下一篇

中国无患子科植物的叶脉形态及其系统学意义

 曹丽敏1、2, 王志新1, 曹明3, 刘健晖1, 林琼1, 夏念和2   

  1. 1 衡阳师范学院生命科学系,湖南 衡阳421008;2 中国科学院华南植物园,广东 广州510650;
    3 广西壮族自治区中国科学院广西植物研究所,广西 桂林541006
  • 收稿日期:2013-10-07 出版日期:2014-07-25 发布日期:2013-12-02
  • 基金资助:

    中国科学院华南植物园及国家自然科学基金 (31360038)

Leaf Venation and Its Systematic Significance in Sapindaceae of China

 CAO  Li-Min-1、2, WANG  Zhi-Xin-1, CAO  Ming-3, LIU  Jian-Hui-1, LIN  Qiong-1, JIA  Nian-He-2   

  1. 1 Department of Life Sciences, Hengyang Normal University, Hengyang 421008, China; 2 Guangxi Institute of Botany,
    Guangxi Zhuang Autonomous Region and the Chinese Academy of Sciences, Guilin 541006, China; 3 South China
    Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
  • Received:2013-10-07 Online:2014-07-25 Published:2013-12-02
  • Supported by:

    中国科学院华南植物园及国家自然科学基金 (31360038)

摘要:

对国产狭义无患子科25属27种植物的叶脉形态特征进行了研究报道。结果表明:叶脉均属于羽状脉类型,其中多数为曲行羽状脉,部分为直行羽状脉;叶缘有全缘、具齿和深裂3种类型;二级叶脉具有分支和不分支两种类型;大部分种类具二级间脉,少数不具间脉或间脉不明显;多数种类的三级脉为结网型和贯串型并存;网眼的发育有完善和不完善2种类型;盲脉有简单、具分支和无盲脉3种类型。叶脉形态研究结果支持文冠果亚科以及广义鳞花木属概念,观察发现龙眼属、荔枝属与韶子属从脉序特征方面表现出较近的亲缘关系,编写了国产无患子科叶片脉序特征检索表。

关键词: 无患子科, 七叶树科, 槭树科, 叶脉形态, 系统学意义

Abstract:

 Leaf venation of 27 species representing 25 genera of Sapindaceae (sstr.) of China was investigated for the first time. The pinnate venation pattern in most species is either camptodromous, or craspedodromous. Three types of leaf blade margin were observed, ie., entire, toothed and partite. The secondary veins are branched or unbranched. Most species have intersecondary veins. The tertiary veins of most species are reticulate and percurrent. The areoles are regular or irregular. Veinlets are simple, branched or absent. The delimitations of Xanthoceroideae and Lepisanthes sensu lato are supported by leaf venation characters. The close relationships among Dimocarpus, Litchi and Nephelium are supported by the evidence from leaf venation. A key to the species of Sapinaceae based on leaf venation characters is presented.

Key words: Sapindaceae, Hippocastanaceae, Aceraceae, Leaf venation, Systematic significance

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