A small grey brown species with a blue tinge. The cap is hemispheric to convex with a small depression. Cap diam: 10–20 mm. The gills are greyish pink, sometimes with a blue tinge. The stipe is slender and tough. It is blue with a weft of white mycelium at the base. Under the microscope the spores can be seen to be nodulose – a distinctive feature of this species. Found in swampy areas but also in mixed broadleaf-podocarp-beech forest.