10.22376/ijpbs.2019.10.1.p1-12 Volume 6 Issue 3 2015 (July - September) lessThan i greaterThan Putranjiva roxburghii lessThan /i greaterThan Wall (syn. lessThan i greaterThan Drypetes roxburghii lessThan /i greaterThan Wall.) of Euphorbiaceae family is an evergreen tree of tropical region often cultivated as avenue tree along the road side. The Objective of the study was to develop various standardization parameters for the evaluation of trunk bark science it is largely used to cure certain ailments. Morphology, histology, powder characteristics and Scanning Electron Microscopy (SEM) of bark were observed and results were recorded. Physico-chemical parameters such as total ash value (13.5%) w/w, moisture content (6%) w/w, foaming index (less than 100), total tannin content (5% w/w), Crude fibres residue ( 32%) w/w, Fluorescence analysis, extractive value includes pet ether soluble extractive value (3.45%), ethanol (3.90%), ethyl acetate(5.14%) and aqueous extract(3.5%) w/w were analysed by chemical test and shows presence of saponins, tannins, steroids, triterpenoids. So these parameters are usefull in the authentication of lessThan i greaterThan Putranjiva roxburghii lessThan /i greaterThan Wall. However the phytochemical analysis of bark of lessThan i greaterThan Putranjiva roxburghii lessThan /i greaterThan in the present work is first of its kind used for the pharmacognostic and phytochemical evaluation. KEDAR KALYANI ABHIMANYU, DR. CHAUDHARI SANJAY RAVINDRA AND DR. RAO SRINIVASA AVANAPU Putranjiva roxburghii, Euphorbiaceae, Physico-chemical, Pharmacognostic 530-538