<p><strong>Lepiotaceous fungi of West Bengal, India: the genus <em>Chlorophyllum</em></strong></p>

Abstract

<jats:p>The state West Bengal, India was thoroughly investigated and a total of ten specimens belonging to the genus Chlorophyllum was collected. Detailed morphological and molecular studies revealed that the collected specimens were distributed over three species among which two viz. Chlorophyllum hortense and C. molybdites were previously known from the region, and one, Chlorophyllum squamulosum sp. nov., is described herein as new to science. The new species is distinguished by its small plate-like squamules over the pileus coloured greyish brown to reddish brown or dark brown; truncate, hyaline basidiospores with a prominent germ-pore; relatively small (17–25 × 7.5–11.5 μm), clavate or spheropedunculate cheilocystidia; and a tightly packed hymeniderm type pileus covering. A comprehensive morphological description, field photographs of the basidiocarps, comparisons with phenotypically similar and phylogenetically related species and a phylogram showing the placement of each of the collected species are provided. Besides, earlier records of Chlorophyllum species from West Bengal as well as in India are consulted and information related to diversity of the genus in the country are discussed with notes on the previous records. An artificial dichotomous key is provided to aid in the identification of the presently available Chlorophyllum species in India.</jats:p>

Introducing a new member of the genus Chlorophyllum: Chlorophyllum sapukai sp. nov., and new records from Paraguay

“…The recovered topologies are consistent with previous works (Ge et al 2018;Loizides et al 2020;Dutta et al 2020) and the six main clades previously recognized as sections, i.e. sect.…”

“…Scientific names of species and GenBank accession numbers of the sequences included in the multigene analyses are listed in Table S1. Sampling was based on the most recent and extensive works regarding the genus (Ge et al 2018;Dutta et al 2020;Loizides et al 2020;Sysouphanthong et al 2021) (Table S1). Leucoagaricus barssii and Leucoagaricus nympharum were selected as outgroup (Vellinga et al 2003).…”

“…Remarks. The morphological characteristics that have been used to define the species include (i) agaricoid basidiomata with medium to large sized pileus, (ii) the free, crowded lamellae that turn greenish white to pale green when dry, (iii) thick-walled, pale green, ellipsoid basidiospores with a prominent truncated apex without a hyaline cover, and (iv) pyriform to spheropedunculate cheilocystidia (Ge & Yang 2006;De Meijer et al 2007;Dutta et al 2020).…”

“…The genus comprises a morphologically diverse group that includes species with agaricoid, secotioid, and gasteroid forms; the presence of a smooth stipe, a hymenidermal pileus covering (in agaricoid species) and green-brown or white, hyaline basidiospores with a germ pore usually present (Vellinga 2002(Vellinga , 2003Vellinga & De Kok, 2002;Loizides et al 2020). The number of documented species of Chlorophyllum increased during the last decade from 16 (Kirk et al 2011) to 28 currently accepted species due to the use of molecular tools (Crous et al 2015;Ge et al 2018;Dutta et al 2020). Based on multigene phylogenetic analyses, six infrageneric sections have been proposed: sect.…”

Rhodocybe brunneoaurantiaca (sect. Rufrobrunnea, Entolomataceae): a new species from India

“…Genomic DNA was extracted following Dutta et al (2020). The primer pairs, ITS1/ITS4 (White et al 1990) and LR0R/ LR3 (Vilgalys and Hester 1990), were used for selective amplification of the nrITS and nrLSU regions.…”