Abstract
Two new species, Leucoagaricus tropicus and Leucoagaricus brunneodiscus, are described from West Bengal, Eastern India, based on morphological details and phylogenetic analyses. Leucoagaricus tropicus is characterized by its white, medium-sized pileus with a brown to dark brown umbo, a white stipe that directly changes to brownish-red or brown on bruising or with KOH, ellipsoid basidiospores with inconspicuous germ pore, dimorphic cheilocystidia, narrowly clavate to narrowly fusiform cystidioid elements on the annulus and small cystidioid elements of the pileus covering. Leucoagaricus brunneodiscus is distinguished by the presence of colourless to orange-white drops on the stipe, brownish-orange to brown annulus with dark brown edge, ellipsoid basidiospores without a germ pore and small, clavate cheilocystidia. Detailed descriptions, field photographs of the collected basidiomata, comparisons with morphologically similar and phylogenetically related species and a phylogram generated from the combined dataset of nrITS and LSU sequences are provided. An artificial key to all Leucoagaricus taxa reported in India is also provided.
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