Agaricus, large spored

Agaricus macrospora
These small off white to brown bell-shaped mushrooms occur in dense clusters on rotting wood. They may appear to be growing on the ground if there is rotting wood below. The caps are radially grooved and often display mica-like granules. These are remnants of the universal veil and are easily washed off by rain. The cap margin is turned down. There is an upper stalk ring. The gills eventually turn black and partially deliquesce (dissolve as in most inky caps).