Populus alba
It has been recorded forming ectomycorrhizal association with white poplar ("Populus alba") in Hungary. Its ectomycorrhizae contain bright yellow pigments, especially the rhizomorphs, and have warts on the outer surfaces of both the rhizomorphs and the mantle. The ectomycorrhizae of "R. armeniacus" cannot be reliably distinguished from those of "Xerocomus subtomentosus".