Two new species of Metacampanella (Agaricales, Marasmiaceae) from China and Mongolia

<i>Metacampanella</i> is an important genus in the Marasmiaceae family. We collected specimens during our investigations in China and Mongolia. Through morphological and molecular phylogenetic analyses, we identified two new species of this genus: <i>Metacampanellasubtricolor</i> and <i>Metacampanellacoprophila</i>. In addition, we identified <i>Metacampanellatricolor</i> as a novel combination. Molecular systematic studies support these results. Illustrated descriptions, taxonomic discussions, and keys to the genus are provided.