Cortinarius sect. Crassispori Kytöv., Niskanen & Liimat.

Fellin, Alessandro, Calledda, Federico, Frøslev, Tobias Guldberg, Armada, François, Stohn, Geert Schmidt, Brandrud, Tor Erik, Dima, Bálint, Valdagni, Alessandro & Bellanger, Jean-Michel, 2024, Cortinarius (Basidiomycota, Cortinariaceae) section Crassispori revisited: resolving the C. chevassutii complex and demystifying C. variebulbus, Phytotaxa 663 (5), pp. 247-266 : 254

Cortinarius sect. Crassispori Kytöv., Niskanen & Liimat. , in Niskanen et al. (2020), Index Fungorum 439: 6

Type: Cortinarius crassisporus Kytöv., Niskanen & Liimat. , in Niskanen (2014), Index Fungorum 201: 1.

Original diagnosis: Basidiomata medium to large-sized. Pileus pale brown, brown, grey, grey brown to dark reddish brown, in some species coated by white fibrils, hygrophanous. Lamellae at first pale brown, later brown. Stipe clavate to bulbous, silky-white fibrillose. Universal veil white, in some species becoming partially pale brown, sparse or forming a couple of incomplete girdles on the stipe. Basal mycelium white. Context in pileus pale brown to brown, in stipe brownish white to pale brown, marbled hygrophanous, becoming darker brown at the base with age. Odour in lamellae indistinct. Basidiospores amygdaloid, ellipsoid, obovoid or ovoid to almost subglobose, <13.5 × 9.0 μm. Lamellar trama hyphae smooth. In deciduous and coniferous forests.