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Abstract
Fistulinella cinereoalba sp. nov., Austroboletus rostrupii, previously known from southeastern Asia, and Austroboletus festivus from Brazilian Amazonia are described for the first time from the Guiana Shield. These boletes were collected from tropical forests dominated by ectomycorrhizal Dicymbe spp. (Fabaceae subfam. Caesalpinioideae) in the Pakaraima Mountains of western Guyana.
This research was supported by grants to TWH and REH 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, the Humboldt State University Foundation, and NSF DEB-0918591 provided support for TWH. REH acknowledges support from the National Science Foundation grant DEB-041466. We gratefully acknowledge Matt Smith for assistance with molecular work, Michael Pilkington for providing original photographs for Figs. and and Adrianna Wenzel for the SEM images. Field assistance in Guyana was provided by Mimi Chin, Cathie Aime, Christopher Andrew, Leonard Williams, Valentino Joseph, Francino Edmond and Luciano Edmond. Research permits were granted by the Guyana Environmental Protection Agency and Ministry for Amerindian Affairs. This paper is No. 157 in the Smithsonian Institution’s Biological Diversity of the Guiana Shield ProgramPUBLICation series.
