Boletus pinophilus

Suprapellis filamentous, with hyphae strongly interwoven, with brown intracellular pigment, without clamp connections, from which emerge very abundant fusiform terminal hyphae functioning as pileocystidia.

Cystidia scarce, scattered, fusiform, with a long neck.

Basidia clavate and 4-spored.

Spores elongated, fusiform, hyaline, pale yellow under the microscope, with a lateral apiculus and vacuolar content inside.