Van der Linde, Johannes AlwynSix, Diana L.Wingfield, Michael J.Roux, Jolanda2012-05-232012-05-232012Van der Linde, JA, Six, DL, Wingfield, MJ & Roux, J 2012, 'New species of Gondwanamyces from dying Euphorbia trees in South Africa', Mycologia, vol. 104, no. 2, pp. 574–584.0027-5514 (print)1557-2536 (online)10.3852/11-166http://hdl.handle.net/2263/18827Gondwanamyces and its Custingophora anamorphs were first described from Protea infructescences in South Africa. Subsequently these unusual fungi were also found on Cecropia in Central America. During an investigation into the decline and death of native Euphorbia trees in South Africa, several fungal isolates resembling the anamorph state of Gondwanamyces were obtained from diseased tissues. In this study these isolates are identified based on morphology and comparisons of DNA sequences. Two previously unknown Gondwanamyces species were identified, both were associated with damage caused by beetles (Cossonus sp.). Inoculation studies showed that the new species of Gondwanamyces are pathogenic on Euphorbia ingens and may contribute to the decline of these trees.en© 2012 by The Mycological Society of AmericaCossonusCustingophoraEuphorbia ingensEuphorbia tetragonaKnoxdavesiaGondwanamycesEuphorbiaceae -- Diseases and pests -- South Africa -- IdentificationInsect-fungus relationships -- South AfricaTrees -- Mortality -- South AfricaArticle