Abstract
Four new Annulohypoxylon species are described from northeastern Brazil: A. austrobahiense, A. macrodiscum, A. hemicarpum and A. purpureopigmentum. A key is provided.
The authors thank Fundação de Amparo à Pesquisa do Estado da Bahia (FAPESB) and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) for financial support and Department of Plant Pathology/Washington State University by technical support. We also thank Instituto de Estudos Socioambientais do Sul da Bahia (IESB) and RPPN Serra do Teimoso for cooperation and permission for field trips.