A new species of Agaricus sect. Agaricus (Agaricaceae) from India

Agaricus albovariabilis is presented as a new species from peninsular India on the basis of morphological features and ITS sequence analysis. It is charcterized by small to medium sized white basidiomata, becoming brownish at maturity, unchanging context, mild anise odor, negative Schäffer's and KOH reactions, and clavate to vesiculose clavate cheilocystidia. It is presented with detailed descriptions, photographs, phylogenetic reconstruction and a comparison with phenetically similar species.