Fig. 1

Maximum likelihood (ML) phylogram (-ln = 57979.037507) based on RPB1, RPB2, and 28S ribosomal DNA sequences depicting phylogenetic relationships of the Boletaceae and new sequestrate Guyanese taxa (in red bold). ML bootstrap support values greater than 70 are shown above the nodes. Other sequestrate taxa are indicated in bold with solid black dots preceding their binomials. Previously identified clades with multiple species from the same higher taxon are collapsed into triangles for visual simplification as is a clade of outgroup taxa from several non-Boletaceae lineages of Boletales.