Abstract: The nectary morphology of Sagittaria triforia female flowers were studied using paraffin section and histochemistry methods.The results showed that the nectaries were not upgrowth,no obvious shaped nectaries and they were just gland cells and secretory cavities.Nectary cells were at the receptacle surface which was at the bases of the furthest outside gynoecia.They were constituted of gland cells,which named gland epidermises and belonged to receptacle nectaries.They were only secrete epidermises and no spe...