Association of more than one pathogenic fungi and nonpathogenic fungi with a single Water hyacinth leaf spot is noteworthy. Nonpathogenic associates, such as P. oxalicom, C. lunata and Fusarium sp. were already recorded as local leaf surface inhabitants of Water hyacinth. Hence, such associations suggest the possible formation of disease complexes which could exhibit various degrees of synergism and/or antagonism. In certain instances, only nonpathogenic fungi were isolate from some leaf spots. This may be due to extreme cases of antagonism where the primary pathogen was completely replaced by nonpathogens. Alternatively, these leaf spots may be caused by fungi which did not readily grow on the media used.