Macowanites luteolus Smith and Trappe Fruit body 2-4cm across, uneven, lumpy button mushroom-shaped with a smooth surface; white to creamy buff, drying yellowish; slightly viscid at first. Spore mass creamy sponge-like mass of half-formed gills. Stem
10-20 x 5-l0mm, short and stubby; whitish or creamy like the cap. Flesh pallid. Odor slight. Taste like raw potatoes. Spores globose to subglobose, with warts or spines like a russula, 7.9-9.4 x 7-8.5µ; warts up to lmm long, amyloid when viewed under a microscope. Habitat just under or on the surface of the ground under conifers. Found in Oregon and on the Washington coast. Season September-October. Edibility not known. Comment Like an underground russula that does not properly form its gills. One form, which has no stem, was collected in Washington with the normal type. The spores of this collection are similar but a little larger, 9-14.5 x 8.4-11.5µ.