Cortinarius parvisporus Vizzini, 2024

Bose, Arunima, Niskanen, Tuula, Datta, Sudeshna, Ghosh, Aniket, Vizzini, Alfredo & Das, Kanad, 2024, Two new species and a new record of Cortinarius subgenus Telamonia (Agaricales) from India, European Journal of Taxonomy 970, pp. 38-60 : 56

Cortinarius parvisporus Vizzini nom. nov.

MycoBank MB 852973

Cortinarius brunneocarpus var. microsporus J.Khan , in Khan, Sher, Hussain & Khalid 2020: 5.

Etymology

The specific name is from the Latin word parvus (small) and sporus (spore) and refers to its small spores.

Type material

Holotype PAKISTAN • Khyber Pakhtunkhwa, Swat District, Miandam Valley ; 2250 m a.s.l.; 7 Aug. 2016; on moist soil under Abies pindrow Royle ; J. Khan MM1609; GenBank no.: MT250929 (ITS); SWAT [ SWATMM1609 ].

Remarks

According to the phylogenetic analysis ( Fig. 1 ), C. brunneocarpus var. microsporus and C. brunneocarpus are considered distinct species. Recombination at species level cannot be done because “ C. microsporus ” is pre-occupied by C. microsporus (Velen.) G.Garnier (Bibliographie des Cortinaires. D - O: 207 (1991). Consequently, a nomen novum is established above.

Cortinarius parvisporus , so far known from Pakistan, Estonia ( Fig. 1 ) and Norway ( Khan et al. 2020) differs from C. brunneocarpus mainly by the much smaller spores (6.1–7.6 × 4.8–5.4 μm versus 8.5–11.5 × 6.0–8.5 μm) ( Song et al. 2019; Khan et al. 2020).

Figures

Fig. 1. Phylogram generated by maximum likelihood analysis based on ITS sequence data for C. thindii A.Bose & K.Das sp. nov., C. dhakuricus A.Bose & K.Das sp. nov., C. pseudotorvus A.Naseer, J.Khan, & A.N.Khalid and allied species. Maximum likelihood bootstrap support values (MLbs) ≥ 70% are shown on the left of “/”. C. thindii and C. dhakuricus are placed in bold red and C. pseudotorvus placed in bold blue font, respectively, to highlight their phylogenetic positions in the tree.