A dark‑capped, intensely violet Purpurascentes species of Nothofagus forest, with a glutinous umber–blackish pileus, saturated violet gills and stipe, persistently violet flesh, and coarsely verrucose spores.

Pileus: 20-70 mm, viscid to glutinous, weakly or not hygrophanous. Colour umber to blackish brown, often with a faint purple tinge. Surface coarsely innate‑fibrillose to granulose, frequently with sparse grey to pale‑ochre patches or tufts. Margin violet, becoming striate to rimose at maturity, often denticulate.
Lamellae: Saturated violet, sometimes darkening when pressed.
Stipe: Cylindrical to clavate; brilliant lilac‑blue, partly coated silvery pale violet, with thin violaceous fibrils and bands. Apex pale blue to white.
Veil: Violet to dark violet, sparse; cortina white to pale violet.
Context: Persistently violet, marbled darker violet, often darkening on pressure.
Odour/taste: Faint, rubbery-sweet. Taste nil.