thirty wood-rot fungi were screened for their ability to grow on media containing kraft lignin with a limited amount of glucose. of these fungi, twenty-three were tested for ligninolytic activity judged by decolorization of lignin. four species: absidia cylindrospora, piptoporus betulinus, cylindrocladium camelliae and gleoephyllum trabeum were selected for further studies because they decolorized lignin after 3 weeks of culture by 9, 11, 26, 9%, respectively.