Isolation of fungi from samples ofOrobanche crenataForsk. andOrobanche minorSm. plants collected from Syria, Morocco, and France yielded 16 different species belonging to nine genera. The most common genera wereAlternaria, FusarlumandUlocladium.Eleven species out of the 16 had not been known previously to have occurred onOrobanche.In the preliminary laboratory and field testsUlocladium atrumPreuss. could infect and destroy underground tubercles and emerged shoots ofO. crenataprovided temperature was around 20°C and the relative humidity between 50% and 80%. Its use as a potential biological control ofOrobancheappears promising and should, therefore, be further studied.