中国云实属植物叶脉形态学  

Leaf Venation of Caesalpinia from China

作　　者：李世晋[1] 张奠湘[1] 黄向旭[1] 陈忠毅[1] 

机构地区：[1]中国科学院华南植物园,广东广州510650

出　　处：《热带亚热带植物学报》2004年第2期133-141,共9页Journal of Tropical and Subtropical Botany

基　　金：中国科学院知识创新工程(华南植物研究所所长基金;青年科学家小组项目;青藏高原项目KSCX-2-1-06B)资助

摘　　要：对中国云实属植物小叶叶片脉序的观察表明,该属植物小叶叶片脉序类型非常一致,均为环结曲行羽状脉,二级脉急转曲行。叶脉分支一般为四级,少数达五级。盲脉不分支或分支较少,最多两次分支。见血飞亚属与云实亚属叶片脉序特征相似,属于同一自然类群。编写了中国云实属植物叶片脉序特征分种检索表。Leaf venation of all the 20 species of Caesalpinia occurring in China were studied. Venation patterns of the leaflets in the genus studied are all brochidodromous. The secondary veins are abruptly curved. The highest vein order is quaternary or quinternary. Veinlets are simple, or once or twice branched. Leaf venation characters show that both Caesalpinia s.s. and Mezoneurum are in a natural group. A key to the species of Caesalpinia based on leaf venation characters is presented.

关 键 词：叶片脉序 云实属 中国 

分 类 号：Q944[生物学—植物学]