植物分类学报

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国产木兰科含笑亚族植物的叶结构及其分类学意义

1 2张新华; 1夏念和*   

  1. 1(中国科学院华南植物园经济植物所 广州 510650)
    2(中国科学院研究生院 北京 100049)
  • 收稿日期:2006-08-31 修回日期:2007-01-15 出版日期:2007-03-18 发布日期:2007-03-18
  • 通讯作者: 夏念和 E-mail:nhxia@scib.ac.cn

Leaf architecture of subtribe Micheliinae (Magnoliaceae) from China and its taxonomic significance

1 2ZHANG Xin-Hua, 1XIA Nian-He*
  

  1. 1(Institute of Economic Botany, South China Botanical Garden, the Chinese Academy of Sciences, Guangzhou 510650, China)
    2(Graduate University of Chinese Academy of Sciences, Beijing 100049, China)
  • Received:2006-08-31 Revised:2007-01-15 Online:2007-03-18 Published:2007-03-18
  • Contact: XIA Nian-He E-mail:nhxia@scib.ac.cn

Abstract: Leaf architectural and morphological characters of 28 taxa from Michelia, Paramichelia and Tsoongiodendron (Magnoliaceae sensu stricto, subtribe Micheliinae) were examined to gain a better understanding of the intergeneric relationships and the systematic positions of some species within Michelia. The taxa examined, all of which have simple leaves with entire margins and camptodromous pinnate venation, varied in their secondary venation, which was brochidodromous or brochidodromous to eucamptodromous, the mixture of simple and composite intersecondary veins, percurrent to reticulate tertiary veins. Dendroid veinlets were recorded for the first time in Michelia species. Phenetic analyses of leaf architectural characters and morphological characters suggested that Paramichelia and Tsoongiodendron are grouped together and merged in the Michelia, and these characters provide useful taxonomic information for division of sections in Michelia. In addition, systematic positions of some species in Michelia are discussed.

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