Pileus: convex or plano convex with a low umbo; up to 80 mm diameter; radially fibrillose becoming glabrous; green, brownish green; margin down turned but not inrolled.

Stipe: cylindrical to somewhat clavate; 60 – 100 × 8 – 14 mm; dry, fibrillose green turning rusty brown from trapped spores.

Gills: adnate; moderately spaced; pale ochre, darkening to rusty brown as the spores mature; lamellulae present in one intercalated series.

Flesh: moderately thin, white.

Spore print: rusty brown.                       

Spores: broadly ellipsoid; 9 – 11.5 × 5 – 7 µm; Q = 1.7; warty.

Notes: this Cortinarius is characterized by its green cap with a paler brownish green margin and greenish brown stipe. The New Caledonia collections may be distinct from those in Australia.