Hypholoma sublateritium

Hypholoma sublateritium, sometimes called Brick Cap, is rarer and less well-known than its relatives, the inedible Sulphur Tuft (Hypholoma fasciculare) and the edible Hypholoma capnoides. Its fruiting bodies are generally larger than either of these.

In Europe this mushroom is often considered inedible or even poisonous, but in the USA and Japan it is apparently a popular edible fungus. One further reason to avoid it is the possibility of confusion with Galerina marginata or H. fasciculare.

Description
Cap: 3.5-10cm in diameter, usually with a brick-red coloration in the centre and a paler margin. It is smooth, sometimes with red-brown flecks in the middle and sometimes with flaky veil remnants, which can easily be washed off in the rain, on the outside.
 * Gills: Crowded, starting yellowish and becoming greyish with age. They do not have the green colour of H. fasciculare.
 * Stipe: Light yellow, darker below.
 * Spore powder: Olive purple-brown.
 * Taste: Mild to somewhat bitter.
 * Microscopic characteristics: Spores 6.0-7.5 × 3.5-4.0 μm, with germ pore, cheilocystidia variable.