Pileus (Cap): 1.5 %u2013 4 cm across, dry, at first hemispheric, expanding to campanulate to convex, with an incurved margin when young. Young caps start out light brown and fade to off-white or light gray at maturity, sometimes with yellowish or brownish tones. Often developing cracks in dry weather, slightly hygrophanous, turning greenish or blue where damaged.
Lamellae (Gills): Broadly adnate to adnexed attachment, close, starting out gray and turning black as the spores mature. Gill faces with a mottled appearance, edges white.
Stipe (Stem): 12 cm long by 2 to 3 mm thick, equal to slightly enlarged at the base, pruinose, colored like the cap, staining blue where bruised.
Microscopic features: Jet Black, 12 - 15 x 7 - 11 um, smooth, opaque, elliptical. With a germ pore. Basidia 4 spored, pleurocystidia fusoid-ventricose, cheilocystidia 12 x 4 um.
Season: Found in early summer through late autumn.
Habitat and Distribution: Solitary to widely scattered or in groups on or near dung in pastures; widely distributed in the tropics and subtropics. It is fairly common along the Gulf Coast of the United States and also occurs Mexico, Hawaii, the Philippines, Australia, France, Brazil, and Bolivia.