11PHARMACOGNOSTICAL AND PHYTOCHEMICAL INVESTIGATION OF WHOLE PLANT OF OXALIS CORNICULATA LPharmacognostical standardization of natural products is a complex task due to their heterogeneous composition, which is true for, any plant part or extracts obtained thereof. To ensure reproducible quality of herbal products, authentication of the starting material is essential. Phytochemical and Pharmacognostic investigation was carried out on the whole plant of Oxalis corniculata L. The assignment such as macroscopy, anatomical studies and preliminary phytochemical screening were performed since the species was not noted for its pharmacognosy in part. Macroscopic studies is a technique of qualitative evaluation based on the study of morphological and sensory profiles of whole plant of Oxalis corniculata L. Microscopic studies is a technique of qualitative evaluation and used to confirm the structural details of drugs from the whole plant of Oxalis corniculata L. and also study of the phytoconstituents by application of chemical methods. The perusal of literature also revealed that no pharmacognostic work had been carried out on the whole plant of Oxalis corniculata L. For this reason we have investigated the Phytochemical and pharmacognostic profiles of whole plant of Oxalis corniculata Lyallareddy777@gmail.comResearch212012Oxalis corniculata L,Phytochemical Screening,Pharmacognostic StudiesK. Yalla Reddy,S. Mohana LakshmiAssistant Professor, Department of Pharmacognosy, Sana college of pharmacy, Kodad, Andhra Pradesh,-508 206, India,Professor, Department of Pharmacognosy, Sree Vidyanikethan College of Pharmacy, Tirupati, Andhra Pradesh - 517102, India