Austroboletus niveus is a small, snow-white New Zealand bolete notable for its extremely mucilaginous cap and stipe, white to pale pinkish pores, and large hyaline spores. It is endemic to New Zealand and occurs under Nothofagus

Cap: Up to 90 mm diam., snow-white. Exceedingly mucilaginous; pellicle made of loosely woven hyphae covered in large drops of mucilage containing oil droplets. Fragments of veil may hang from the margin. Flesh white, soft.
Pores & Tubes: Pores up to 1.5 mm wide. White at first, becoming pale pinkish-fawn with age. Dissepiments appear woolly under a lens. Tubes depressed around the stipe; trama mixed.
Stipe: 70 mm x 10 -15 mm, tapering upward. White, mucilaginous, covered in a network of ridges (a reticulate pattern).
Flesh: White, soft, no colour change reported.
Basionym: Tylopilus niveus.