Abstract
Gerronema confusum sp. nov. is described and illustrated from North China, which is diagnosed by the combination of grayish brown omphalinoid basidiomata, decurrent lamellae, a central stipe, smooth, ellipsoid to subglobose, inamyloid basidiospores, 1–2-spored basidia, abundant cheilocystidia, a pileipellis disrupted by clusters of pileocystidia, and a stipitipellis disrupted by caulocystidia. ITS-phylogeny supported G. confusum as a distinct species.
References
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<p>Hughes, K.W., Petersen, R.H., Mata, J.L., Psurtseva, N.V. & Aime, M.C. (2007) <em>Megacollybia</em> (<em>Agaricales</em>). <em>Kinjin Kenkyusho Kenkyu Hokoku</em> 45: 1–57.</p>
<p>Katoh, K. & Standley, D.M. (2013) MAFFT multiple sequence alignment software version 7: improvements in performance and usability. <em>Molecular Biology and Evolution</em> 30: 772–780. https://doi.org/10.1093/molbev/mst010</p>
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<p>Liu, P.G. (1995) Five new species of <em>Agaricales</em> from Southern and Southeastern Yunnan, China. <em>Mycotaxon</em> 56: 89‒105.</p>
<p>Liu, L.N., Mou, G.F. & Bau, T. (2019) A new <em>Gerronema</em> species with striking colours from China. <em>Phytotaxa</em> 405 (2): 74–82. https://doi.org/10.11646/phytotaxa.405.2.2</p>
<p>Lutzoni, F.M. (1997) Phylogeny of lichen- and non-lichen-forming omphalinoid mushrooms and the utility of testing for combinability among multiple datasets. <em>Systematic Biology</em> 46 (3): 373–406.</p>
<p>Malysheva, E.F., Morozova, O.V., Contu, M. (2011) New combinations in <em>Clitocybula</em>: a study of cystidiate <em>Pseudoomphalina</em> species (<em>Basidiomycota</em>, <em>Agaricomycetes</em>). <em>Sydowia</em> 63 (1): 85–104.</p>
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