短命植物小甘菊营养器官解剖学研究

A STUDY OF THE BIOLOGICAL CHARACTERISTICS AND THE ANATOMICAL VEGETATIVE ORGANS OF THE EPHEMERAL PLANT IN CANCRINIA DISCOIDEA (IDB. ) POK

小甘菊（Cancriniadiscoidea（Idb．）Pok）营养器官的结构特点为望叶表皮细胞中含有叶绿体；茎内有大型长弧形裂腔；叶为等而叶，叶柄近轴面具栅栏组织却为异而叶的极特殊结构，具C4植物型结构特征；根具次生结构，茎（花葶）仅有初生结构。

This paper details an investigation on the anatomical structure of Cancriniadiscoidea (ldb. ) Pob. Epidermal cell of stem and leaf contains larger in numberchloroplasts. There are five long cracks on the cross section of stem. The blade is structure ofisobilateral leaf,but the petiole is the special structure of bifacial leaf. The well--developedpalisade tissue is made of four layers of palisade cells. The plant belongs to four--carbonplant. The root has secondary structure,but the stem only has primary structure.