basidia four-spored with horn-like sterigmata; cystidia probably absent (but many basidiole impersonators); hyphal system apparently monomitic but of two types, subhymenial hyphae thin walled, hyaline and without clamps, basal hyphae significantly thicker (but not thick walled) with large and abundant clamps; spores brown, ellipsoid and apiculate, inequilateral in side view, some collapsed, walls cyanophilic (i think).