Leucoagaricus Locq. ex Singer, Sydowia 2(1-6): 35 (1948)
Index Fungorum number: IF 17956; Mycobank number: MB 17956
Notes – The traditional circumscription of the genus includes small- to medium-sized species with thinto fleshy basidiomata, a fibrillose or±squamulose to scaly pileus, free lamellae, simpleannulus, dextrinoid and metachromatic basidiospores, and cheilocystidia and hyphae without clamp connections (Singer 1986; Vellinga 2001). The species with plicate pilei, spores with or without apical germ pore, and a hymenium with pseudoparaphyses have been placed in the genus Leucocoprinus (Singer 1986). The phylogenetic studies have, however, shown that Leucoagaricus (type species L. rubrotinctus (Peck) Singer) is polyphyletic and intermixes with Leucocoprinus Pat. (type species L. cepistipes (Sowerby) Pat.) and the relationships of both genera are still unresolved (Vellinga 2003, 2004; Vellinga et al. 2011; Justo et al. 2021). The morphologically delimited Leucoagaricus is widely distributed and contains approximately 150 species (Hussain et al. 2018). The species are saprotrophic occurring on soil, wood chips, and sawdust in a wide range of habitats.
Type species – Leucoagaricus rubrotinctus (Peck) Singer, Sydowia 2(1-6): 36 (1948).