and : Two new truffles encased in tomentose mycelium from Japan.

We describe two new Japanese truffle species, and , based on molecular and morphological analyses. Both species are clearly distinguishable from other species by the ocher tomentose mycelium covering the ascoma surfaces. has one-spored asci that each contain a large (68-97 × 51-80 µm), reddish-brown ascospore; these microscopic characters are similar to those of closely related Chinese species, , and forms one to four ascospores per ascus with a reddish-brown color similar to that of ascospores of and , although their spores are much larger than those of (27‒64 × 26‒55 µm). Molecular phylogenetic analyses based on ribosomal internal transcribed spacer and partial 28S nuc rDNA sequences support that both species are distinct within the Macrosporum group.