 Although "Scleroderma polyrhizum" is probably a saprobic species, experimental evidence suggests that it is also mycorrhizal.When a slurry of spores was inoculated with seedlings of Monterey pine ("Pinus radiata"), the fungus grew ectomycorrhizae that were dichotomously branched and formed coral-like structures comprising more than 50 branches.These structures were 1–2 mm long and 0.4–0.6 mm in diameter.