Abstract
Mating systems of Xeromphalina austroandina, X. campanella, X, campanelloides, X. cauticinalis ssp. cauticinalis, X. cauticinalis ssp. pubescentipes, X. cornui, X. fraxinophila, X. fulvipes, X. helbergeri, X. kauffmanii, X. parvibulbosa, and X. tenuipes were determined to be tetrapolar. Notes on culture morphology and comparisons to members of the Xerulaceae and Tricholomataceae are presented.