This is the largest family of the agaricales, which is defined mainly by not having any characters which distinguish them from other families.
Tricholoma are a large genus of mycorrhizal gilled fungi found world wide which have a white spore print. With fleshy stems attached to the centre of the cap with no collar the gills are attached to the stem but are more or less strongly notched. This genus contains both edible and poisonous species some are native and not named while others are introduced and found under exotic trees.
These are large, white-spored, saprobic, wood-inhabiting fungi, with two known species in New Zealand. These are covered in dense red-brown scales, with bright yellow gills and no ring on the stalk.