Comments. A typical cortinar in subgenus Myxacium with a thick gluten on most of the basidiome. Cortinarius vitreofulvus resembles the very common C. vitreopileatus E. Horak, which may be separated by its pale pileus colour and moderately verrucose spores. From available molecular data the genetic affinity to the latter is also evident, although its closest relative appears to be Cortinarius marmoratus E. Horak, characterised by a dark, chocolate-coloured pileus and violet lamellae. According to the protologue, Cortinarius viscostriatus E. Horak (Horak & Wood 1990) can be separated by its pale colours and minutely warty spores.