结果表明：不同直径大小的横走侧根均由周皮、次生维管组织和四原型的初生木质部构成。
The results showed that all the cross branch roots of different sizes consisted of periderm, secondary vascular tissue and tetrarch primary xylem.
对款冬营养器官解剖结构研究表明：根为典型的双子叶植物根的结构，初生木质部四原型；
The anatomical structure of Tussilago farfara L. vegetative organs showed that its structure of root is a typical structure of dicotyledonea. Its primary xylem is quadriarch ones.
结果：根横切面上栓内层的石细胞环带和次生木质部导管的排列方式、初生木质部为四原型等为显微鉴别特征；
Results:The circular belt of sclereids in the phelloderm, secondary xylem vessel order of the transverse section, and tetrarch of the primary xylem were microscopic characters.
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