How to tell Tricholoma caligatum from Panther cap

Cap 5–12 cm across, spherical or bell-shaped when young, later flattened-convex. The surface is shiny, brown, gray-brown or olive-brown, dotted with small pure-white warts, usually spread fairly evenly; rain can wash them off.

The cap of Tricholoma caligatum is 6 to 15 centimeters across. When young it is hemispherical with an inrolled margin, opening with age to convex and flat. The surface is dry, covered with large pressed-down fibrous scales of chestnut-brown to dark brown on a paler background. The scaly brown cap gives the mushroom a stout, eye-catching look.

Gills free, white, crowded. They don't change color when damaged — this sets them apart from a similar edible species (the blusher), whose flesh and gills turn pink.

The hymenophore is gilled. The gills are attached to the stem or notched, crowded, whitish or cream, developing rusty-brown spots with age. The spore print is white. Pale gills with reddish spots, together with the ring on the stem, help you recognize this species.

Stem 6–12 cm tall, white, smooth, with a thin membranous ring in the upper part. At the base there is a bulb with remnants of the veil — not a free, sac-like volva, but one or more white woolly rings or a spiral above a narrow gutter on the bulb; this rimmed bulb distinguishes it from the blusher.

The stem is cylindrical, dense, 4 to 12 centimeters tall. Its defining feature is a felty ring, below which the stem is covered with dark bands of scales that look like a pulled-on boot — hence the name. Above the ring the stem is pale, below it brown and scaly. There is no volva. The combination of a scaly cap, a ring and a scaly "boot" sets this species apart.

Flesh firm, white, does not turn pink when damaged (a critical feature that distinguishes it from the similar blusher). No distinctive taste. The toxins are spread evenly throughout the whole fruiting body.

The flesh is white, thick, dense and fibrous, and barely changes color when cut. The taste is often bitterish, especially in mushrooms from under broadleaf trees; non-bitter specimens have a pleasant taste close to matsutake. Because of possible bitterness, the flesh is boiled before cooking. Its most characteristic feature is a strong spicy aroma.

Smell faint, neutral or slightly unpleasant — subtly radish-like or earthy. It is neither sharp nor repulsive, which makes it harder to sense the danger while foraging.

The smell is strong, spicy and penetrating, reminiscent of nutmeg, cinnamon or pepper — one of the defining features of the species. It is by this characteristic spicy aroma, together with the scaly cap and the boot on the stem, that Tricholoma caligatum is easiest to recognize.