湖南安息香属植物叶片脉序特征及其分类学意义  

Characteristcs of the leave venation for species of Styrax from Hunan and their significances on plant classification

作　　者：田径[1] 喻勋林[1] 李家湘[1] 

机构地区：[1]中南林业科技大学林学院,湖南长沙410004

出　　处：《中南林业科技大学学报》2010年第1期101-104,共4页Journal of Central South University of Forestry & Technology

基　　金：中南林业科技大学青年基金项目(07004B)

摘　　要：采用脉络法系统地对湖南安息香属10种植物的叶片脉序特征进行观察分析。结果表明:本属中野茉莉Styrax japonicus、栓叶安息香Styrax suberifolius、垂珠花Styrax dasyanthus、老鸹铃Styrax hemsleyanus、白花龙Styraxfaberi、灰叶安息香Styrax calvescens和芬芳安息香Styrax odoratissimus等7种的二级脉伸出后角度存在种间差异;越南安息香Styrax tonkinensis,栓叶安息香Styrax suberifolius,大果安息香Styrax macrocarpus等3种的二级脉伸出角无显著种间差异,叶缘三级脉不具分枝;除栓叶安息香四级脉较粗之外,其它种的四级脉略纤细且排列紧密,可以作为分类鉴定的重要依据。Leaf venation characteristics of 10 species from Styrax in Hunan were examined to provide new morphological evidence for the classification of Styrax.The results show that： the secondary veins＇ angle have interspecies differences among 7 species in Styrax（Styrax japonicus,Styrax suberifolius,Styrax dasyanthus,Styrax hemsleyanus,Styrax faberi,Styrax calvescens and Styrax odoratissimus）;but there are little differences among the other 3 species（Styrax tonkinensis,Styrax suberifolius,Styrax macrocarpus） and the tertiary veins on the margin have no branches;the quaternary veins are slightly tenuous and closely arranged except the veins of Styrax suberifolius which are relatively thick.These distinctive characteristics are different among species,which can be used to identify species.

关 键 词：植物学 安息香属 叶片脉序 分类 湖南 

分 类 号：Q948.5[生物学—植物学]