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We describe four new nodulose-spored species ofInocybefrom tropical regions of Africa:I. beninensis, I. flavipes, I. fuscobrunneaandI. pallidiangulata.The new species are recognised based on morphological data and phylogenetic analyses of ITS, 28S andRPB2sequences. Phylogenetic analyses indicated thatI. flavipesandI. beninensisare part of a subclade leading to theI. calidagroup.Inocybe fuscobrunneaappears sister to theI. asterosporagroup.Inocybe pallidiangulatais nested within a clade of mainly tropical species from South Asia, Africa, and South America, close to the subclade ofI. lilacinosquamosaandI. ayangannaefrom Guyana. Complete descriptions and illustrations, including photographs and line drawings, and a key to nodulose-spored taxa of tropical African species ofInocybeare provided.
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This content will become publicly available on December 1, 2025
Contributions to the Inocybe umbratica–paludinella (Agaricales) Group in China: Taxonomy, Species Diversity, and Molecular Phylogeny
Inocybe is the largest genus in the family Inocybaceae, with approximately 1000 species worldwide. Basic data on the species diversity, geographic distribution, and the infrageneric framework of Inocybe are still incomplete because of the intricate nature of this genus, which includes numerous unrecognized taxa that exist around the world. A multigene phylogeny of the I. umbratica–paludinella group, initially designated as the “I. angustifolia subgroup”, was conducted using the ITS-28S-rpb2 nucleotide datasets. The seven species, I. alabamensis, I. angustifolia, I. argenteolutea, I. olivaceonigra, I. paludinella, I. subangustifolia, and I. umbratica, were confirmed as members of this species group. At the genus level, the I. umbratica–paludinella group is a sister to the lineage of the unifying I. castanea and an undescribed species. Inocybe sect. Umbraticae sect. nov. was proposed to accommodate species in the I. umbratica–paludinella group and the I. castanea lineage. This section now comprises eight documented species and nine new species from China, as described in this paper. Additionally, new geographical distributions of I. angustifolia and I. castanea in China are reported. The nine new species and I. angustifolia, I. castanea, I. olivaceonigra, and I. umbratica are described in detail and illustrated herein with color plates based on Chinese materials. A global key to 17 species in the section Umbraticae is provided. The results of the current study provide a more detailed basis for the accurate identification of species in the I. umbratica-paludinella group and a better understanding of their phylogenetic placement.
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- Award ID(s):
- 2030779
- PAR ID:
- 10624921
- Publisher / Repository:
- MDPI, Basel, Switzerland
- Date Published:
- Journal Name:
- Journal of Fungi
- Volume:
- 10
- Issue:
- 12
- ISSN:
- 2309-608X
- Page Range / eLocation ID:
- 893
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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