Hydnellum ferrugineum

A species typical of conifers, with a characteristic blood-red exudate in young specimens.

Monomitic hyphal system: generative hyphae thin-walled in the subhymenium to moderately thick-walled in the basal hyphae, with abundant brown intracellular pigment especially in the latter, septate with simple septa (clampless).

Cystidia and other sterile hymenial elements absent.

Basidia cylindric-clavate, 20-30 µm long and 5-7 µm wide, without basal clamps, 4-spored.

Spores ovoid to short ellipsoidal, with coarse nodulose protuberances, hyaline or with faint brownish intracellular pigment, with a large central oil droplet, inamyloid in Melzer's reagent.