Botanical studies of the leaf, stem and root of Carissa macrocarpa , (Apocynaceae), cultivated in Egypt

The present study examines various standardized parameters as morphological and histological characters which could be helpful in authentication of the leaf, stem and root of Carissa macrocarpa. Concerning the microscopical features of Carissa macrocarpa, the plant is characterized microscopically by presence of large calcium oxalate clusters, forked apex fibers as well as pericyclic fibers with balloon like structure.