The blusher. The one problem with this mushroom is that, whilst edible itself, it closely resembles others that are poisonous, including the death cap. It must be cooked as it contains a toxin which is destroyed by heat, like kidney beans. The most identifiable thing about it is that this reddish brown mushroom with pinkish grey scales and a white stem colours pink to red at sites of damage or bruising. The gills and flesh are white, also becoming red or pink on bruising. It is most commonly found in beech woods in summer to late autumn (US: fall). Also look closely at the ring on the stem. This should have lots of fine grooves on its upper side, unlike another poisonous mushroom which it closely resembles, the panther cap.
Russula integra. A good edible mushroom with pinkish brown colour.
Greencracked brittlegill. A variety of wild mushroom which, as its name implies, is a sort of olive green with darker green markings and with creamy brittle gills. Most brittlegills resemble other ones that are inedible and some will cause gastric problems. You can normally detect what type it is by the flavour. A tiny tasting will immediately reveal whether or not it is edible, but it is worth spitting it out immediately if you detect a bitter taste.
Russule or charcoal burner, a mushroom that closely resembles other bitter, indedible ones.