Thaxterogaster pallidirimosus

Thaxterogaster pallidirimosus produces medium‑sized fruit bodies with a pileus 3–9 cm broad, initially hemispherical to convex before expanding. The cap surface is viscid when moist and very finely fibrillose, appearing whitish to cream in young specimens, with a brownish‑yellow centre that turns more ochraceous with age and displays hygrophanous streaks as it dries. The gills (lamellae} are emarginate at the stipe attachment, crowded, and shift from pale greyish‑brown in youth to pale brown at maturity. The stipe measures 6–13 cm in length and 0.7–1.5 cm thick near the apex, widening to 1.5–2.5 cm at the base; it is club-shaped (clavate) to nearly cylindrical, whitish when fresh, then very pale brown with age. A sparse white universal veil may leave fragments on young specimens. The flesh (context) is white and emits a honey‑like odour. In dried specimens (Latin: specimina exsiccata) as deposited in herbaria the pileus ranges from cream to ochre‑brown—darker centrally, lighter towards the margin—with the stipe often paler than the cap. Under the microscope, spores measure 8.6–10.7 by 5.2–6.1 μm and are almond‑shaped to almond‑ellipsoid, their surfaces unevenly to coarsely verrucose and staining slightly dextrinoid in Melzer's reagent. Basidia are four‑spored, clavate, 24–36 by 7.5–9 μm and nearly colourless. …

The fungus is found throughout Fennoscandia, in Russia, and in Oregon (United States). It fruits on the ground singly or in small groups in boreal forest, mesic forest, and mixed forests with birch.

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