About Panaeolina foenisecii (Pers.) Maire
The cap of Panaeolina foenisecii measures 1 to 4 cm across, with a shape ranging from conic to convex. It is hygrophanous: it is brownish when moist, and tannish when dry, and often has a dark band around the margin that fades as the mushroom dries. The gills are broad and adnate; they are brown with lighter edges, and become mottled as spores mature. The spore print is deep brown, and sometimes purplish. The stipe is 3 to 8 cm long by 1 to 3 mm thick; it is fragile, hollow, beige to light brown, fibrous, pruinose, and slightly striate. This mushroom has a slightly unpleasant nutty fungal taste, and its odor is nutty and slightly unpleasant. In terms of habitat and distribution, Panaeolina foenisecii can be found throughout North America. In the Pacific Northwest of the United States, this species may be the most common mushroom that appears in recently fertilized lawns. It is also found growing on lawns along the East Coast of North America.
