Inosperma is a genus of gilled mushroom in the family Inocybaceae. Previously defined as a subgenus within the large genus Inocybe by Robert Kühner in 1980, these fungi were found to be more distantly related in a 2019 multigene phylogenetic study by Matheny and colleagues.
Description This group of mushrooms was distinguished morphologically from other Inocybes by the absence of pleurocystidia and the shape of the spores. Also the stem is usually longer than the cap is wide and the cheilocystidia consist each of a single cell and are often so numerous that they make the gill edge white.
Inosperma is divided into two sections: Cervicolores (with a scaly cap) and Rimosae (with a radially fibrose or radially cracking ("rimose") cap). The former includes I. bongardii and I. calamistratum whilst the latter takes in I. cookei, I. erubescens, I. maculatum and I. rimosum.
Species , Index Fungorum lists the following species in Inosperma: Image Name Taxon Author Year Inosperma acutofulvum (Bizio & Castellan) Bizio, A. Castellan & Cervini 2020Inosperma adaequatum (Britzelm.) Matheny & Esteve-Rav. 2019Inosperma africanum Aïgnon, Yorou & Ryberg 2021 Inosperma afromelliolens Eyssart. & Buyck 2021 Inosperma akirnum (K.P.D. Latha & Manim.) Matheny & Esteve-Rav. 2019Inosperma apiosmotum (Grund & D.E. Stuntz) Matheny & Esteve-Rav. 2019 Inosperma armoricanum (R. Heim) Matheny & Esteve-Rav. 2019 Inosperma aureostipes (Kobayasi) Matheny & Esteve-Rav. 2019 Inosperma bicoloratum (E. Horak, Matheny & Desjardin) Matheny & Esteve-Rav. 2019 Inosperma boeticum Eyssart. & Buyck 2021Inosperma bongardii (Weinm.) Matheny & Esteve-Rav. 2019Inosperma bulbomarginatum Aïgnon, Yorou & Ryberg 2021Inosperma calamistratoides (E. Horak) Matheny & Esteve-Rav. 2019 Inosperma calamistratum (Fr.) Matheny & Esteve-Rav. 2019 Inosperma carnosibulbosum (C.K. Pradeep & Matheny) Matheny & Esteve-Rav. 2019Inosperma cervicolor (Pers.) Matheny & Esteve-Rav. 2019 Inosperma changbaiense (T. Bau & Y.G. Fan) Matheny & Esteve-Rav. 2019 Inosperma chlorochroum (Corriol & Guinb.) Matheny & Esteve-Rav. 2019Inosperma cookei (Bres.) Matheny & Esteve-Rav. 2019 Inosperma cyanotrichium (Matheny, Bougher & G.M. Gates) Matheny & Esteve-Rav. 2019 Inosperma dodonae Bandini & B. Oertel 2021Inosperma erubescens (A. Blytt) Matheny & Esteve-Rav. 2019Inosperma fastigiellum (G.F. Atk.) Matheny & Esteve-Rav. 2019Inosperma flavobrunneum Aïgnon, Yorou & Ryberg 2021 Inosperma fulvoumbrinum (Bres.) Matheny & Esteve-Rav. 2019 Inosperma fulvum (Bon) Matheny & Esteve-Rav. 2019 Inosperma fuscospinulosum (Corner & E. Horak) Matheny & Esteve-Rav. 2019 Inosperma geraniodorum (J. Favre) Matheny & Esteve-Rav. 2019 Inosperma gregarium (K.P.D. Latha & Manim.) Matheny & Esteve-Rav. 2019 Inosperma griseolum (Takah. Kobay.) Matheny & Esteve-Rav. 2019 Inosperma hainanense Y.G. Fan, L.S. Deng, W.J. Yu & N.K. Zeng 2021 Inosperma hirsutum (Lasch) Matheny & Esteve-Rav. 2019 Inosperma insignissimum (Romagn.) Matheny & Esteve-Rav. 2019 Inosperma ionides (Corner & E. Horak) Matheny & Esteve-Rav. 2019 Inosperma ismeneanum Bandini & B. Oertel 2021 Inosperma kuthanii (Stangl & J. Veselský) Matheny & Esteve-Rav. 2019Inosperma lanatodiscum (Kauffman) Matheny & Esteve-Rav. 2019 Inosperma latericium (E. Horak) Matheny & Esteve-Rav. 2019 Inosperma lilofastigiatum (Stangl & J. Veselský) Matheny & Esteve-Rav. 2019Inosperma maculatum (Boud.) Matheny & Esteve-Rav. 2019 Inosperma maximum (A.H. Sm.) Matheny & Esteve-Rav. 2019 Inosperma misakaense (Matheny & Watling) Matheny & Esteve-Rav. 2019 Inosperma monastichum Bandini & B. Oertel 2021 Inosperma mucidiolens (Grund & D.E. Stuntz) Matheny & Esteve-Rav. 2019 Inosperma muscarium Y.G. Fan, L.S. Deng, W.J. Yu & N.K. Zeng 2021 Inosperma mutatum (Peck) Matheny & Esteve-Rav. 2019 Inosperma neobrunnescens (Grund & D.E. Stuntz) Matheny & Esteve-Rav. 2019 Inosperma pallidifolium (Murrill) Matheny & Esteve-Rav. 2019 Inosperma pisciodorum (Donadini & Riousset) Matheny & Esteve-Rav. 2019 Inosperma proximum (E. Horak, Matheny & Desjardin) Matheny & Esteve-Rav. 2019 Inosperma quercinum (Hongo) Matheny & Esteve-Rav. 2019 Inosperma quietiodor (Bon) Matheny & Esteve-Rav. 2019 Inosperma reisneri (Velen.) Matheny & Esteve-Rav. 2019 Inosperma rhodiolum (Bres.) Matheny & Esteve-Rav. 2019 Inosperma rimosoides (Peck) Matheny & Esteve-Rav. 2019 Inosperma rosellicaulare (Grund & D.E. Stuntz) Matheny & Esteve-Rav. 2019 Inosperma rubricosum (Matheny & Bougher) Matheny & Esteve-Rav. 2019 Inosperma saragum (K.P.D. Latha & Manim.) Matheny & Esteve-Rav. 2019 Inosperma shawarense (Naseer & Khalid) Aïgnon & Naseer 2021 Inosperma subhirsutum (Kühner) Matheny & Esteve-Rav. 2019 Inosperma submaculatum Eyssart. & Buyck 2021 Inosperma subrubescens (G.F. Atk.) Matheny & Esteve-Rav. 2019 Inosperma subsphaerosporum Y.G. Fan, L.S. Deng, W.J. Yu & L.Y. Liu 2021 Inosperma sulcatum (Moënne-Locc., Poirier & Reumaux) Matheny & Esteve-Rav. 2019 Inosperma tenerrimum (G.F. Atk.) Matheny & Esteve-Rav. 2019 Inosperma umbrinovirens (E. Horak) Matheny & Esteve-Rav. 2019 Inosperma veliferum (Kühner) Matheny & Esteve-Rav. 2019 Inosperma vinaceobrunneum (Matheny, Ovrebo & Kudzma) Haelew. 2020 Inosperma vinaceum Cervini, M. Carbone & Bizio 2021 Inosperma viridipes (Matheny, Bougher & G.M. Gates) Matheny & Esteve-Rav. 2019 Inosperma virosum (K.B. Vrinda, C.K. Pradeep, A.V. Joseph & T.K. Abraham ex C.K. Pradeep, K.B. Vrinda & Matheny) Matheny & Esteve-Rav. 2019
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