Gloeophyllum sepiarium

Species associated with coniferous wood.

Trimitic hyphal system, with skeletal hyphae very thick-walled, with abundant golden-brown intracellular pigment, up to 6 µm wide, aseptate; generative hyphae hyaline, 2.5-4 µm wide, moderately thick-walled, clamped; binding hyphae scarce, thick-walled, with short branchings.

Cystidia obtuse, some elongated and projecting above the hymenial level, smooth and thin-walled.

Basidia cylindric-clavate, up to 40 µm long, with basal clamps, 4-spored.

Spores cylindrical, slightly allantoid, smooth, hyaline, thin-walled, with an inconspicuous lateral apiculus at one end, inamyloid in Melzer's reagent.