Aligned LSU dataset and phylogenetic relationships of Tylopilus glutinosus

Tylopilus glutinosus from Bangladesh is described and illustrated based on
morphology along with molecular data. This species is characterized by its
caespitose habitat, a purple pileus that becomes very viscid when wet,
unchanging context, an ixotrichodermial pileipellis with the outer layer
consisting of 3–4 cylindrical cells and the inner layer composed of
filamentous hyphae, broadly fusoid to fusoid basidiospores, and putative
association with Shorea robusta. Morphologically, this species resembles
T. plumbeoviolaceoides and T. plumbeoviolaceus. However, some distinctive
macro- and microscopic features along with geographical distribution and
host preference can be used to separate them from each other. Furthermore,
DNA sequence of the nuclear ribosomal large subunit (nrLSU) analysis
undoubtedly placed them in different lineages or clades within Tylopilus.
Detailed morphological descriptions, illustrations of the new species, and
its comparison with the related taxa of Tylopilus are also provided with
phylogenetic placement.