Tricholoma portentosum - Hat diameter 40 to 120 mm. Light to dark gray in color, rarely with a brown, yellow, green or bluish shade. The shape of the young fruiting body is hemispherical, later convex to flat with a bulge in the central part. The surface is smooth, sticky during wet weather, dry and shiny during drought, covered from the inside to the edges with blackish, radially running fibrils. Often covered with sand and litter pieces.
Lamellae whitish, slightly watery, in older specimens with a yellow or yellowish green hue. Densely set, quite wide, near the sinus shaft, helically serrated.
Stem whitish, sometimes with a yellowish or greenish tinge. Cylindrical in shape. Lengths 60 to 120 mm and thickness 10 to 30 mm. Dry and smooth surface. Full, slightly fibrous.
Off-white pulp, watery gray in places, unchanging. With the smell of flour and a mild taste.
Occurrence: In coniferous forests, mostly pine, also spruce, with a lot of lichen or mosses, on sandy soils. Fruits singly or in groups, often frequent, from summer to late autumn, in some years even in December.
Value: Tasty edible mushroom.