Cap: (5-) 15-20 (-35) mm in diameter, obtuse or convex to campanulate, becoming expanded, striate, hygrophanous, yellowish-brown or yellow-gold in some young button forms not strongly browning. Only the Margin stains slightly blue-green when injured.

Gills:Adnate or adnexed, light violet-gray to dark violet-brown or chocolate-violet.

Stem:(25-) 55-75 (-95) x (1.5) 3-4 (-5) mm, equal and thicker at the base, straight, staining blue-green when touched or with aging, with rhizomorphs at the base of the stipe.

Spores:(10.4) 12-14 (-17) x (6-) 6.7-7.7 (-8.8) x 6-7.5 microns. elongate-ellipsoid in face view.

Sporeprint:Blackish-violate.

Habitat:Gregarious in groups of fruiting bodies of 5-20 specimens, growing on soil with wood debris or on twigs or very rotten logs, rarely on pine cones, in open woods of Pinus hartwegii with abundant grasses at the 3200-4000 m of elevation.

Distribution:Known only from the high mountains of Central Mexico, such as Sierra Nevada (Rio Frio, Popocatépetl anbd Paso de Cortés), Nevado de Toluca and La Malinche, in the States of Mexico, Puebla and Tlaxcala.

Season:
This fungus fruits from August through October.

Dosage:Unavailable

Comment:This fungus is employed by the Mexican Indians of the Popocatépetl region, e.g. in the town San Pedro Nexapa. The younger generation of Indian children sell this mushroom to tourists along trhe wayside road to Popocatépetl and also in Huautla de Jiménez.Two popular Nahuatla names for this species are "niños" and "niñitos." The name of this species refers to the Aztecs, who ate this fungus before the Spanish came to the New World.