Anatomic studies and cytological observation of the floral nectary in Tamarix laxa Willd. Were investigated with light and scanning electron microscopy. Tamarix laxa has a nectary on the floral disc between the basal part of corolla and ovary. It belongs to disc nectary. The nectary in composed of epidermis and nectariferous tissue which has vascular bundle. A thicker cuticula in present on the surface of the epidermal layer

but there is not any stomata on it. The epidermal layer in thought to function in nectar secretion. During the development of nectariferous tissue

the vacuole and starch occurred regularly decrease and increase change. The vascular lead to the nectary tissue from basical receptacles to nectary tissue

which only consists of phloem. It in concluded that the pre-nectar comes from the sap of the phloem.