Aqueous extracts of the leaves, bark and roots of Anacardium occidentale, Bradelia ferruginea and Ficus sur were bio-assayed at full concentrations (100%) of their antifungal potential by determining the inhibitory effects of these on the mycelial growth of Fomes lignosus and Coriolopsis occidentalis. Statistically significant differences at P ≤ 0.05 between plants and plants parts as well as the resistance of the test fungi to treatment with different plant part extracts were studied. Results indicated that all plants and their parts contain water soluble active ingredients of antifungal properties which inhibited the growth of Fomes lignosus and Coriolopsis occidentalis. Crude extracts from all the parts of Ficus sur were more active in inhibiting the mycelia growth of Fomes lignosus and Coriolopsis occidentalis.

Key words: Antimicrobial; culture; in vitro; mycelia; pathogen; potato dextrose agar.