A deep blue, black-squamulose cap; blue stipe; 5-6 angled spores; in NZ Nothofagus and podocarp forest.

Pileus: 6-25 mm diam., hemispherical to convex when young, later depressed or umbilicate at centre; margin incurved. Colour deep blue, covered with black or concolorous squamules or fibrils. Dry, non‑striate.
Lamellae: (L 8-15, l 1-3) adnexed to adnate, sometimes subdecurrent with a short tooth. Whitish at first, becoming pink. Edges concolorous, not fimbriate.
Stipe: 20-50 x 1-3 mm, cylindrical, slender, blue, with white basal mycelium. Glabrous, dry, fistulose.
Context: blue beneath the pileus cuticle.
Odour/taste: indistinct or slightly farinaceous.