not all of which are shared by the class. Some Psilocybes have a little nipple-like knob or protrusion on top—it’s called an umbo, I learned; others don’t. Some were “viscid”—slippery or slimy when wet, giving them a shiny appearance. Others were dull and matte gray; some, like azurescens, were a milky caramel color. Many but not all Psilocybes sport a “pellicle”—a condom-like layer of gelatinous material covering the cap that can be peeled off.
