With the method of the paraffin sections, the origin and development of biseriate glandular tnclaemes （BGT）of Artemisia annua L. are studied. The results obtained show that a mother cell in epidermis of leaf primordium differentiate into a BGT. The first and second divisions of the mother cell are longitudinal and transverse respectively and four cells are formed, of which two cells in epidermis longitudinally are divided into four basal cells and two cells on epidermis transversally divided into two stalk cells and six glandular cells. A BGT...
