About Lactarius pseudomucidus Hesler & A.H.Sm.
Lactarius pseudomucidus Hesler & A.H.Sm. has a charcoal brown cap that is smooth, slimy, and 2–10 centimetres (3⁄4–4 in) across. The cap starts out flat convex and becomes shallowly depressed as it matures. Its gills are decurrent, white with a gray or yellow tinge, and stain brownish when damaged. The stipe is 2.5–10 cm (1–4 in) tall and 5–12 millimetres (1⁄4–1⁄2 in) thick; it is hollow and brittle. Both the cap and stipe are mucilaginous. The flesh is gray, and the latex is milky white, drying yellowish. This fungus has only a slight odor, and its taste slowly becomes acrid. Spores are white in mass, ellipsoid, amyloid, about 8 μm long, with a reticulate decoration on the surface. The spore print is cream. This species is inedible, and its extremely viscid cap and stalk act as a deterrent. It is native to northwestern North America, and is often found in coastal and conifer forests.