The roots of Pseudarthria viscida (L.) Wight and Arnott. (Leguminosae) are used against various disorders in Indian systems of medicine, namely as anthelmintic, anti-inflammatory, cardiotonic, aphrodisiac, rejuvenating, tonic and as a remedy for cough, asthma, tuberculosis, diarrhoea and alternate fever. The present communication deals with the detailed pharmacognostical evaluation of the root sample using light and confocal microscopy, WHO recommended physico-chemical determinations and authentic phytochemical procedures. he physico-chemical, morphological and histological parameters presented in this paper may be proposed as parameters to establish the authenticity of P. viscida root and may possibly help to differentiate the drug from its other species.