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With the systematic investigation of plants from the Potchefstroom district an attempt is made to document valuable data of taxa from Southern Africa, concerning the primary evaluation of their chemical constituents and activity in a few biological systems. Fresh or frozen plant material is used and the following tests are performed on each morphological part: chemical screening tests for several important secondary metabolites; tests to determine potential phototoxicity; direct-plate tests todoi:10.4102/satnt.v5i1.971 fatcat:3vkd4chxsvbg7me2aevra7lvmy