Description of Hydnotrya cerebriformis (Discinaceae: Pezizales) from Mexico

The genus Hydnotrya is composed of around 13 ectomycorrhizal, hypogeous, sequestrated Ascomycetes distributed exclusively in temperate forests in the northern hemisphere. This work describes and illustrates for the first time a species of this genus, Hydnotrya cerebriformis, from Mexico. The species is distributed in the Transmexican Volcanic Belt (in the Estado de Mexico, Puebla, and Tlaxcala) and the state of Nuevo Leon at altitudes between 3,100 and 4,000 m, and associated mainly with Pinus hartwegii, P. montezumae, and Abies religiosa forests. (C) 2017 Universidad Nacional Autonoma de Mexico, Instituto de Biologia.