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The present study aimed to perform pharmacognostic, physicochemical and phytochemical investigations on crude powders and different types of extracts of various parts of Oxalis corniculata (Family: Oxalidaceae). The sections of different parts of the plant were stained and examined using a light microscope. Powders of different parts were also examined under light microscope. The behavior of the powders under ultraviolet light was also investigated, before and after treating with certain reagents. The powders were analyzed for the determination of proximate parameters, primary metabolites and Fourier Transform Infrared (FTIR) spectra. The extracts of different parts were investigated for primary and secondary metabolites. FTIR spectra of leaves stem and fruit showed bands at 3435–3400 cm-1 , 2918 cm1 , 1654–1651 cm-1 and 1052–1049 cm-1 , however, the fingerprint region of the spectrum indicated the difference in chemical constituents. The stained cross-sections of different parts and their powder’s microscopy, TLC profiles and primary and secondary metabolites showed distinct pharmacogostic features that could be used for identification. The observed moisture content values of leaves and stems were 5.5% and 6.0%, respectively which showed less quantity of moisture in the crude powders. The results of the present study may be used for the identification of the plant.