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Abstract
Boletellus exiguus sp. nov. and Boletellus dicymbophilus sp. nov. (Boletaceae, Boletales, Basidiomycota) are described as new to science. These boletes were collected from tropical forests dominated by ectomycorrhizal Dicymbe corymbosa (Caesalpiniaceae) in the Pakaraima Mountains of western Guyana.
This research is supported by grants to TWH from the National Geographic Society’s Committee for Research and Exploration, the Smithsonian Institution’s Biological Diversity of the Guiana Shield Program, the Linnaean Society of London, the Duke University Department of Botany and the Humboldt State University Foundation. Field assistance in Guyana was provided by Mimi Chin, Cathie Aime, Christopher Andrew, Leonard Williams, Valentino Joseph, Francino Edmond and Luciano Edmond. Micah Dunthorne is thanked for the scanning electron micrograph of Boletellus exiguus. REH acknowledges support from the National Science Foundation grant DEB-0414665. The authors thank J. Kimbrough and G. Laursen for use of laboratory facilities. Research permits were granted by the Guyana Environmental Protection Agency and Ministry for Amerindian Affairs. This paper is No. 130 in the Smithsonian Institution’s Biological Diversity of the Guiana Shield ProgramPUBLICation series.