A medium-sized, green-tinged cortinarius endemic to New Zealand, recognised by its olive-green to aeruginous cap, pale to olive-brown stipe, rust-brown spores, and a persistent cortina. The unusual greenish pigments make it one of the more distinctive native cortinarioid fungi. Originally described by E. Horak, it remains poorly known and rarely collected.

Cap: 30-70 mm diam., convex to plano‑convex; surface dry to slightly viscid, smooth to finely fibrillose. Colour olive‑green, aeruginous‑brown, or greenish‑ochre, often darker at the disc and fading with age. Margin sometimes paler, occasionally showing faint cortina fibrils.
Lamellae: Adnate to adnexed, moderately crowded; initially pale olive‑buff, becoming deep rust‑brown as spores mature. Edges even.
Stipe: 40-90 x 8-18 mm, cylindrical or slightly clavate; surface pale olive‑brown to ochre, often with rusty cortina fibrils near the apex. Flesh pale brownish to olive‑tinged, unchanging.
Veil: A well‑developed cortina, pale at first, later catching rusty spores.
Odour/taste: Indistinct.