Rhizopogon vinicolor is a species complex of ectomycorrhizal fungus which forms a mutualistic relationship with the Douglas-fir (Pseudotsuga spp.).

They are 10 to 33 millimetres (0.4 to 1.3 in) in diameter, rounded or irregularly shaped, of a dirty white colour, later red, and with a few rhizomorphs at the base.

The gleba is firm and buff coloured, darkening with age, with small labyrinthine locules.

The spores are still viable and this enables the fungus to spread and form associations with uninfected trees.

It has been found that if a forest is clear cut and all the dead wood removed, R. vinicolor and other mycorrhiza stop fruiting, the vole population dies out and any newly planted trees fail to thrive.