Large to massive agaric often found growing in rings or trooping groups on grassy soil within pastureland.
Cap: At first ovate maturing to convex and expanding, white or cream yellowing slightly with age or on bruising, smooth or finely scaled often with veil remnants at margin.
Flesh: White, firm and thick with smell of bitter almonds.
Gills: Free, broad, crowded at first pinky-grey then blackish browm.
Stem: White bruising yellow, smooth; ring large, fleshy, persistent, white with a distinctive cog-wheel pattern.
Spores: Blackish brown, ellipsoid, smooth.
Edibility: Good*