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.
Subject(s)
Basidiomycota/classification , Fabaceae/microbiology , Mycorrhizae , Basidiomycota/genetics , Basidiomycota/isolation & purification , Basidiomycota/ultrastructure , Guyana , Microscopy, Electron, Scanning , Plant Roots/microbiology , RNA, Ribosomal, 28S/genetics , Sequence Analysis, DNA , Species Specificity , Spores, Fungal/ultrastructure , Trees , Tropical ClimateABSTRACT
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.
Subject(s)
Basidiomycota/classification , Basidiomycota/isolation & purification , Fabaceae/microbiology , Basidiomycota/cytology , Guyana , Microscopy , Spores, Fungal/cytology , Trees , Tropical ClimateABSTRACT
Tylopilus orsonianus sp. nov. and Tylopilus eximius (Boletaceae, Basidiomycota) are described for the first time from the Pakaraima Mountains of Guyana. Both boletes occur in forests dominated by ectomycorrhizal trees in the genus Dicymbe (Caesalpiniaceae). A key to Tylopilus species distinguishes those known to occur in Guyana.
