Morphology, microscopic anatomy and bacterial inhibition of extracts of Ludwigia adscendens (L.) H. Hara plants growing in Lang Sen Wetland Reserve, Long An province, Vietnam

The study aimed to supplement data on a plant that was considered a folk medicine of Vietnam. Morphological and microscopic anatomical characteristics of this species which were adapted to the frequently flooded habitat of the reserve was studied and analyzed. Alcoholic extracts of each stem, leaf and root part were recovered using a rotary evaporator. The inhibitory ability on bacterial strains including Bacillus cereus, B. subtilis and Escherichia coli was tested through agar plate diffusion method. The result showed that the stem and leaf extracts were effective against all three bacterial strains, while the root extracts had no effect against E. coli.