A deep ­violet, fibrillose, non­aromatic species found under leptospermum, common although its some time over looked due to its dark colour. This is one of two purple species of Cortinarius found under tea trees; the other is not described and is very rare.

Cap: Up to 70 mm diam.; rounded‑convex when young, later rounded‑umbonate to convex, finally almost plane. Surface strongly fibrillose to finely squamulose, becoming more adpressed‑fibrillose with age. Colour deep violet, becoming blackish in old specimens. Dry, not hygrophanous.
Lamellae: Narrowly to broadly adnate, sometimes slightly sinuate; thin to moderately thick; somewhat spaced with 1-2 series of lamellulae. Colour dark violet at first, gradually becoming deep ferruginous; margin concolorous.
Stipe: 80-120 x 15 mm, central, firm, solid; bulbous at base (to 30 mm diam.). Surface dry, with a clear fibrillar velar zone and scattered fibrils below. Colour violet above, somewhat paler than the cap, and paler below. Basal bulb globose, concolorous.
Context: Whitish to pale violet; outer stipe layer dark violet; apex of stipe deep violet.
Odour/taste: Odour: absent or extremely faint; occasionally a wood‑shavings scent. Taste: not recorded as distinctive.