Abstract

• Two latex producing plants were used in present study. The first plant,Calotropis gigantea (L.) R. Br is collected from Dagon University Campus and its local name is Mayoe-gyi (oleander in English) and belongs to the family Asclepidaceae. The second one hevetia peruviana (Pers.) Schum.is taken from the area of North Dagon Township. Myanmar people call it Set-hnit-ya-thi (Madar in English) and belongs to the family Apocynaceae. The collected plants were subjected in the plantidentification using the available literatures at the Botany Department, Dagon University.In morphological study the Calotropis gigantea (L.) R. Br. was perennial shrub. Leaves were usually simple and milky latex present. hevetia peruviana (Pers.) Schum.leaves were simple, spirally arranged and also produce milky latex. The histological study, free hand sections of fresh specimen of leaves were studied under the microscope. The upper epidermal cells of Calotropis gigantea (L.) R. Br. were polygonal in shaped, the stomata were paracytic type and found on both surfaces. In hevetia peruviana (Pers.) Schum., the upper surface view of cells were wavy in shaped, the stomata were anomocytic type and found on the lower epidermis of the leaf. In transverse section, vascular bundles of the two plants were bicollateral type and crescent shaped. The preliminary phytochemical properties were also examined from the latex of these two plants by using the methods of Central Council for Research in Unani Medicine.The presence of glycoside was mostly found in phytochemcial examination. Latex in nature is a milky fluid found in 10% of all flowering plants. The latex of many species can be processed to produce many materials.