New species of Psilocybe in the Caribbean, with an emendation of P. guilartensis

Abstract

Five new species of Psilocybe from the Caribbean are described: P. caribaea, P. egonii, P. subpsilocybioides, P. zapotecoantillarum and P. zapotecocaribaea. All except P. zapotecocaribaea, which is known only from Martinique, are native to Puerto Rico. Psilocybe guilartensis, previously described from Puerto Rico, is the most commonly collected species of Psilocybe in Puerto Rico. New information on morphology is provided for P. guilartensis, and an emendation of the species circumscription is presented.

• Agaricales
• Antilles
• Martinique
• Puerto Rico
• Strophariaceae

This work was supported in part by a grant (to TJB, DJL and SAC) from the National Science Foundation, Biotic Surveys and Inventories Program (DEB-9525902) to the Research Foundation of the State University of New York College at Cortland. Additional financial support for this project was provided by Consejo Nacional de Ciencia y Tecnologia and Sistema Nacional de Investigadores of Mexico (support for GG, FT and FRG). The U.S.D.A. Forest Service, Center for Forest Mycology Research, Forest Products Laboratory, provided logistical support in Puerto Rico. The Department of Natural and Environmental Resources of Puerto Rico kindly granted permits for collecting. We are grateful to Mr. Andrés Ferrer (executive director) and the Fundacion Moscoso Puello for assistance in our work in the Dominican Republic. We also thank our other Dominican Republic co-operators, Lic. O. Ramírez of the National Parks Office; Lic. M. Mejías and D. Rodríguez of the Jardín Botánica Sto. Domingo; Lic. F. Domínguez of Fund. Progressio for access to the Ebano Verde Reserve. The curators of Kew Botanical Gardens kindly provided collections and information for our study. Ms Patricia Eckel, Buffalo Museum of Science, provided the Latin diagnoses. Dr. Andrew Methven is graciously thanked for providing a valuable critique of the manuscript and for helping to improve the presentation.