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3 species
A genus (Boursier) of about 15 medium to large, tough-fleshed mushrooms that grow on the ground in woodland, mostly as litter decomposers. Fewer than ten species occur in North America. None is known to be poisonous, but they are tough and unappealing to eat.
Spores white, amyloid and finely spiny; cap dry, convex to depressed, with an inrolled margin when young; no partial veil; flesh tough; gills white or yellowish, often separable from the cap as a layer; copious white basal mycelium.
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