Recently described (Mycologia 88: 669-670. 1996), this small agaric can be exceedingly common on well-decayed wood in the Monteverde Cloud Forest Preserve. It differs from the pantropical R. brasiliensis by having a less squamulose to glabrous pileus, less and different pigmentation, smaller habit, wider spacing between lamellae, smaller spores, and smaller cystidia. It has also been discovered in Colombia (Franco-M., pers. com.), the Caribbean (Baroni, pers. com.), and Hawaii (Desjardin, pers. com.).