Leucoagaricus sabinae is proposed as a new species based on material collected in the Dominican Republic. This taxon is characterized macroscopically by the relatively small size, the dull gray-pink pileus, yellow gills immediately turning pink when touched and the ever-present white velar residues on the margin of the pileus. Microscopically the vaguely metachromatic to non-metachromatic spores, the scarce, cylindrical-flexuous cheilocystidia and the piles covering elements with parietal pigment are diagnostic. Based on molecular data (nrLSU, nrITS) this species belongs in the Leucoagaricus/Leucocoprinus clade of the Agaricaceae.
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Justo et al. (2015) studied this question.
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