Entoloma mastoideum and E. praegracile — two new species from China

Two new Entoloma species, E. mastoideum and E. praegracile from China, are described, illustrated, and compared with similar taxa. Entoloma mastoideum is characterized by its flesh-colored or pinkish pileus with a distinctive conic to umbonate papilla, 6–8-angled spores, (1–)2-spored basidia, cylindrical to clavate and hyaline cheilocystidia. Entoloma praegracile is distinctive because of its small and pale orange basidiomata, translucently striate pileus, slender and brittle stipe, (1–)2–3-spored and short and stout basidia, and absence of cheilocystidia.