eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2016-02-25 5 1 269 276 6738 article B. Vijayakumari 1 R. Hiranmai Yadav 2 S.V. Nithya 1 Department of Botany, Avinashilingam University, Coimbatore - 641 043 (India). Department of Biotechnology, Karpagam Arts and Science College, Coimbatore - 21 (India). A study was carried out at Avinashilingam University, Coimbatore to observe the pharmacognostic, phytochemical and biochemical activities of A. indica, V. negundo and C. sativum. The pharmacognostic studies involved organoleptic study, fluorescence analysis, preliminary phytochemical studies and biochemical analysis. Different observation revealed the presence of biologically active compounds. The results of organoleptic study offer a scientific basis for the traditional use. The variation in Colour and taste were observed. Fluorescence analysis gave different colours of powders and treatment with chemicals exhibited changes in reactivity of powders. The biochemical activity also was found to vary significantly among tested plant powders. https://www.biotech-asia.org/vol5no1/pharmacognostic-aspect-of-acalypha-indica-vitex-negundo-and-coriandrum-sativum/ Medicinal plants A. indica V. negundo C. Satvium and Pharmacognostic property