Two new species of the genus Boletus (Boletales: Agaricomycetes) in Mexico

Two new species of the genus Boletus collected in a Quercus Forest from Nuevo Leon and Tamaulipas states, Mexico, are described and illustrated for the first time for science: Boletus paulae and B. singeri. Boletus paulae belongs to the sect. Luridi and B. singeri to the sect. Subpruinosi of the genus Boletus. Both species are considered mycorrhizal, the first with Quercus fusiformis and Q. polymorpha and the second with Q. canbyi. The specimens are deposited in the Herbaria ITCV and UNL with duplicates in F and ENCB Herbaria. Besides, keys are provided for determining Mexican species of the sect. Luridi and Subpruinosi that grow in Mexico.