Leucocoprinus taniae (C. Heisecke & M.A. Neves) Kun L. Yang, Jia Y. Lin & Zhu L. Yang, 2024

Yang, Kun L., Lin, Jia Y., Li, Guang-Mei, Li, Taihui & Yang, Zhu L., 2024, Rediscovering Leucoagaricus sinicus, with the recognition of Leucoagaricus and Leucocoprinus as separate genera, and two new genera in Agaricaceae (Basidiomycota), Phytotaxa 676 (3), pp. 199-255 : 241-242

Leucocoprinus taniae (C. Heisecke & M.A. Neves) Kun L. Yang, Jia Y. Lin & Zhu L. Yang , comb. nov.

Registration identifier:— FN572178

Basionym:— Leucoagaricus taniae C. Heisecke & M.A. Neves , Brittonia 74: 23 (2022)

Notes:— Based on the phylogenetic and morphological evidence of the following collection: MAN 1206 (from Brazil, sequence data available from MT952879 (ITS), referred to Heisecke et al. (2022)).

Leucocoprinus viridariorum (G. Muñoz, A. Caball., Salom & Vizzini) Kun L. Yang, Jia Y. Lin & Zhu L. Yang , comb. nov.

Registration identifier:— FN572183

Basionym:— Leucoagaricus viridariorum G. Muñoz, A. Caball., Salom & Vizzini, Phytotaxa 236(3): 230 (2015)

Notes:— Based on the phylogenetic and morphological evidence of the following collections: AH46526 (holotype, from Spain, sequence data available from KU041689 (ITS), referred to Muñoz et al. (2015)) & AC4978 (from Spain, sequence data available from KU041690 (ITS), referred to Muñoz et al. (2015)).

Lepiotaceae Kun L. Yang, Jia Y. Lin & Zhu L. Yang , fam. nov.

Registration identifier:— FN572229

Type genus:— Lepiota (Pers.) Gray, A Natural Arrangement of British Plants (London) 1: 601 (1821)

General characteristics:— Basidiomata usually agaricoid, small to medium-sized, slender to robust, without a color change after damaged. Pileus usually convex to plano-convex, more or less umbonate, with granular, pulverulent, furfuraceous, fibrous or flaky, white or variously colored squamules on a whitish background, rarely uniformly coloured, with a non-plicate to shortly plicate margin. Lamellae usually free, crowded, whitish to yellowish, rarely reddish, bluish or greenish, with a more or less cystidiose edge, interspersed with abundant lamellulae. Stipe usually more or less curved, subcylindrical, more or less bulbous at the base, white or variously colored, with granular, pulverulent or furfuraceous squamules becoming more abundant downwards. Annulus absent or present; usually median to superior, unmoveable, with a flaring to spreading margin, easily broken, if present.

Basidiospores usually spheroidal, but in some species inflated in one or more directions into an irregular shape, thin-walled to slightly thick-walled, smooth or ornamented, colorless to slightly colored, dextrinoid or inamyloid, without a germ pore. Basidia usually four-spored. Lamella trama seeming regular to subregular. Cheilocystidia usually present. Pleurocystidia usually absent. Pileus squamules usually composed of perpendicular to interwoven hyphae or inflated cells. Clamp connections usually present.

Habits:— Usually gregarious, weakly to strongly caespitose, saprotrophic on soil or deadwood, in forests, lawns, urban areas and compost.

Notes:— The family name “Lépiotées” (Roze, Bulletin de la Société botanique de France 23: 111 (1876)) is invalid in accordance with the current nomenclatural code. In the current phylogeny ( Fig. 1 ), Lepiotaceae is a moderately supported monophyletic group circumscribing eight genera, Lepiota , Chamaemyces , Cystolepiota , Echinoderma , Melanophyllum , Pulverolepiota , Smithiomyces , and Verrucospora . Although the Lepiota species in this family are similar to those of the AC group, they are distantly related at a family level (see section Discussion for details).

Figures

FIGURE 1. Overview of the five phylogenies based on different datasets; each genus with more than one collection inferred as a monophyletic group, and the outgroup is each collapsed as a triangle; nodes are annotated if supported by ≥50% MLB or ≥0.9 BPP; holotypes and paratypes are indicated by HT, and PT, respectively. A. Main phylogeny, inferred from the concatenated ITS-nrLSU-rpb2- tef-1α dataset with 392 collections, 313 of which do not have rpb2 and tef-1α sequences; see Fig. 2 for details. B. Phylogeny S1, inferred from the concatenated ITS-nrLSU-rpb2-tef-1α dataset with 68 collections, 61 of which have three to four loci. C. Phylogeny S2, inferred from the concatenated ITS-nrLSU dataset with 392 collections. D. Phylogeny S3, inferred from the concatenated rpb2-tef-1α dataset with 48 collections, all have both rpb2 and tef-1α sequences. E. Phylogeny S4, inferred from the concatenated ITS-nrLSU-rpb2-tef-1α dataset with 134 collections representative for Agaricaceae s. l.