Tricholoma argyraceum

A species associated with trees such as Betula, Populus, or Salix, considered by some authors synonymous with Tricholoma scalpturatum (the latter typical of conifers), with a convex pileus bearing a central umbo, 3 to 7 cm in diameter, finely scaly surface with greyish-brown squamules on a whitish background, adnate white lamellae that yellow with age, cylindrical whitish stipe, and farinaceous odor and taste.

Cuticle filamentous, composed of hyaline hyphae or with only faint brownish pigment inside, 4 to 8 µm wide, arranged more or less parallel to slightly interwoven, septate with simple septa (without clamp connections).

Without cystidia.

Lamellar trama regular or parallel.

Basidia cylindric-clavate, 25 to 35 µm long, 5.5 to 7 µm wide, with simple base, mostly 4-spored.

Spores ellipsoid, smooth, hyaline, thin-walled, with a faint eccentric apiculus at one end, 4 to 5.5 µm long, 2.5 to 3.5 µm wide, containing one or several oil droplets of varying sizes inside, inamyloid in Melzer's reagent.