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Published online by Cambridge University Press: 28 March 2007
Recent revisions of generic relationships in the pyrenocarpous lichen family Trichotheliaceae by J. Hafellner & K. Kalb (based on perithecial pigmentation and ascus structure) and R. C. Harris (based on morphological, chemical and environmental trends) are assessed. However, most of their conclusions are rejected because the authors used shared or variable characters, insufficient specimens and highly disjointed groups of species.