Studies on types and additional materials of Amanita from Brazil

Amanita is a well established genus in both morphologically and molecularly, with three recognized subgenera: Amanita, Amanitina and Lepidella. In Brazil, the genus was infrequently studies during the Twentieth Century, but recent efforts reported more taxa from this country. Thus, this work aims to perform type studies in Amanita and to determine the current name of some materials deposited in Brazilian herbaria with more accuracy. The descriptions of the type materials were updated using modern methods. As result the isotypes of Amanita sulcatissima (sect. Amanita), A. coacta, A. craseodearma,and A. crebresulcata (sect. Vaginatae) are designed here as lectotype since their holotypes were lost or destroyed. Other specimens identified under Amanita were studied and when possible, their generic status updated because some of them do not correspond to Amanita, but to genera belonging Agaricaceae. Descriptions, discussions and drawings are provided.