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. 2022 Dec:10:1-18.
doi: 10.3114/fuse.2022.10.01. Epub 2022 Jul 20.

Four new nodulose-spored species of Inocybe (Agaricales) from West Africa

H L Aïgnon  1 , S Jabeen  2 , A Verbeken  3 , P B Matheny  4 , N S Yorou  1 , M Ryberg  5
Affiliations

Four new nodulose-spored species of Inocybe (Agaricales) from West Africa

H L Aïgnon et al. Fungal Syst Evol. 2022 Dec.

Abstract

We describe four new nodulose-spored species of Inocybe from tropical regions of Africa: I. beninensis, I. flavipes, I. fuscobrunnea and I. pallidiangulata. The new species are recognised based on morphological data and phylogenetic analyses of ITS, 28S and RPB2 sequences. Phylogenetic analyses indicated that I. flavipes and I. beninensis are part of a subclade leading to the I. calida group. Inocybe fuscobrunnea appears sister to the I. asterospora group. Inocybe pallidiangulata is nested within a clade of mainly tropical species from South Asia, Africa, and South America, close to the subclade of I. lilacinosquamosa and I. ayangannae from Guyana. Complete descriptions and illustrations, including photographs and line drawings, and a key to nodulose-spored taxa of tropical African species of Inocybe are provided. Citation: Aïgnon HL, Jabeen S, Verbeken A, Matheny PB, Yorou NS, Ryberg M (2022). Four new nodulose-spored species of Inocybe (Agaricales) from West Africa. Fungal Systematics and Evolution 10: 1-18. doi: 10.3114/fuse.2022.10.01.

Keywords: Agaricomycetes; Inocybaceae; ectomycorrhizal fungi; molecular phylogeny; new taxa; systematics; taxonomy.

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Conflict of interest statement

Conflict of interest: The authors declare that there is no conflict of interest.

Figures

Fig. 1.
Fig. 1.
ML tree of ITS, 28S and RPB2 sequences showing the placement of four new species described from tropical regions of Africa: Inocybe beninensis, I. flavipes I. fuscobrunnea and I. pallidiangulata. Filled circles indicate internodes that are strongly supported (bootstrap proportions SHaLRT support ≥ 80 % / ultrafast bootstrap support ≥ 95 % / Bayesian posterior probabilities > 0.95). Empty circles indicate internodes with moderate support where at least one, but not all, support statistics meet the criteria for strong support). The geographic origin of each tip is given after the species name.
Fig. 2.
Fig. 2.
Micromorphology of Inocybe beninensis (HLA0390). A. Basidio-spores. B. Basidia. C. Cheilocystidia. D. Pleurocystidia. E. Caulocystidia. F. Pileipellis. G. Stipitipellis. Scale bars: A = 3 μm, B = 5 μm; C–G = 10 μm.
Fig. 3.
Fig. 3.
Inocybe beninensis (HLA0390), microscopical characters in KOH. A. Basidiospores. B. Cheilocystidia. C. Pleurocystidia. D. Caulocystidia. Scale bars = 20 μm.
Fig. 4.
Fig. 4.
Micromorphology of Inocybe flavipes (MR00383). A. Basidio-spores. B. Basidia. C. Cheilocystidia. D. Pleurocystidia. E. Caulocystidia. F. Pileipellis. G. Stipitipellis. Scale bars: A = 3 μm; B = 5 μm; C–G = 10 μm.
Fig. 5.
Fig. 5.
Inocybe flavipes (MR00383), microscopical characters in KOH. A. Basidiospores. B. Cheilocystidia. C. Pleurocystidia. D. Caulocystidia. Scale bars: A–D = 20 μm.
Fig. 6.
Fig. 6.
Micromorphology of Inocybe fuscobrunnea (MR00378). A. Basidiospores. B. Basidia. C. Cheilocystidia. D. Pleurocystidia. E. Caulocystidia. F. Pileipellis. G. Stipitipellis. Scale bars: A = 3 μm, B = 4 μm, C–G = 10 μm.
Fig. 7.
Fig. 7.
Inocybe fuscobrunnea (MR00378), microscopical characters in KOH. A. Basidiospores. B. Cheilocystidia. C. Pleurocystidia. D. Caulocystidia. Scale bars: A–D = 20 μm.
Fig. 8.
Fig. 8.
Fig. 8. Micromorphology of Inocybe pallidiangulata (MR00377). A. Basidiospores. B. Basidia. C. Cheilocystidia. D. Pleurocystidia. E. Caulocystidia. F. Pileipellis. G. Stipitipellis. Scale bars: A = 3 μm, B = 5 μm; C–G = 10 μm.
Fig. 9.
Fig. 9.
Inocybe pallidiangulata (MR00377), microscopical characters in KOH. A. Basidiospores. B. Cheilocystidia. C. Pleurocystidia. D. Caulocystidia. Scale bars: A–D = 20 μm.
Fig. 10.
Fig. 10.
Macro-morphology. A, B. Inocybe beninensis (A = HLA0390, B = HLA0462). C. Inocybe flavipes (MR00383). D. Inocybe fuscobrunnea (MR00378). E, F. Inocybe pallidiangulata (E = MR00377, F = HLA0565). Bar = 1 cm.
See this image and copyright information in PMC

References

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