<p><strong><em>Mallocybe africana</em> (Inocybaceae, Fungi), the first species of <em>Mallocybe</em> described from Africa</strong></p>

Abstract

The family Inocybaceae has been poorly studied in Africa. Here we describe the first species of the genus Mallocybe from West African and Zambian woodlands dominated by ectomycorrhizal trees of Fabaceae and Phyllanthaceae. The new species M. africana is characterized by orange-brown fruitbodies, a fibrillose pileus, a stipe tapered towards the base and large ellipsoid basidiospores. It resembles many north and south temperate species of Mallocybe but is most closely related to the southeast Asian tropical species, M. errata. M. africana is widely distributed in West Africa (Benin, Togo, Burkina Faso and Ivory Coast) extending to South-eastern Africa in Zambia. Phylogenetic analyses based on 5.8S rDNA, nLSU and RPB2 sequence data confirm that M. africana is nested within Mallocybe. A complete morphological description and illustrations, including photographs and line drawings, are presented.

Three new species of Trichoderma (Hypocreales, Hypocreaceae) from soils in China

“…Measurement values are expressed as (a–)b–c(–d), where (a) represents the lowest extreme value, b–c contains the minimum value of 90% of the calculated values, and (d) denotes the highest extreme value. The letter “n” indicates the total number of measurements taken ( Aignon et al 2021 ; Li et al 2021 ).…”

New Species of Mallocybe and Pseudosperma from North China

“…The newly generated sequences were assembled and edited using SeqMan (DNA STAR package; DNAStar Inc., Madison, WI, USA) with generic-level identities for sequences confirmed via BLAST queries of GenBank. These sequences of Mallocybe and Pseudosperma were mainly selected from those used by previous studies [2,12,[14][15][16][17][18][19][25][26][27][28][29][30][31][32]. The accession numbers of all sequences employed are provided in Supplementary Tables S1 and S2.…”

“…Approximately 56 species are recorded in Index Fungorum [www.indexfungorum.org/Names/Names.asp (accessed on 5 February 2022)]. This genus is mainly characterized by a coarsely fibrillose or woolly-squamulose and often flattened pileus, which becomes noticeably dark upon the application of 5% potassium hydroxide; adnate lamellae; a short stipe; necropigmented basidia; short cheilocystidia (<50 µm long); and the absence pleurocystidia [2,7,[10][11][12][13][14]. The genus Pseudosperma was originally included in Inocybe section Rimosae sensu stricto (= clade Pseudosperma) [15][16][17], and traditionally placed in the subgenus Inosperma.…”

Three new species of Inosperma (Agaricales, Inocybaceae) from Tropical Africa

“…Spore measurements were made from 40 spores for each species. We measured length (L) and width (W) of the basidiospores and calculated the ratio Q = L / W. Measurements of basidiospores and basidia excluded the apiculus and sterigmata, respectively and are given as (a-)b-c(-d), where (a) = extreme minimum value, range b-c contains minimum of 90% of the calculated values and (d) = extreme maximum value as used in Aïgnon et al (2021).…”