Agrocybe Praecox is an example of a mushroom within this genus. These mushrooms have yellowish brown caps and usually measure about 10-12 cm in diameter. The gills are white at first changing to a woody brown upon maturity. As mentioned before, it is difficult to differentiate the various mushrooms within this genus because most of the species in the group cannot be readily distinguished by reference to their physical attributes.

One method of identification of the species in this group is based on the material they decompose. Agrocybe Molesta is the only species in the group that can decompose grass, others in the genus, easily decompose wood fragment from coniferous trees. Others still, like the Agrocybe
Acericola decompose wood fragments from hard wood trees.