Psilocybin mushrooms, (magic mushrooms,[1] teónanácatl, teotlaquilnanácatl, xochinanácatl) are fungi that contain the medicinal compounds psilocybin and psilocin. There are multiple colloquial terms for psilocybin mushrooms, the most common being magic mushrooms[1] or shrooms.[2] Biological genera containing psilocybin mushrooms include Agrocybe, Conocybe, Copelandia, Galerina, Gerronema, Gymnopilus, Hypholoma, Inocybe, Mycena, Panaeolus, Pluteus, Psilocybe and Weraroa. There are approximately 190 species of psilocybin mushrooms and most of them fall in the genus Psilocybe.
Noticeable changes to the audio, visual, and tactile senses may become apparent from between ten minutes to an hour after ingestion. These shifts in perception, visually, include enhancement and contrasting of worldly colours, strange light phenomena (such as auras or "halos" around light sources and other beings), increased visual acuity, surfaces that seem to ripple, shimmer, or breathe; complex open and closed eye visuals of form constants or images, objects that warp, morph, or change solid colors; a sense of melting into the environment, and trails behind moving objects. Sounds seem to be heard with increased clarity; music, for example, can often take on a profound sense of cadence and depth. Some users experience synesthesia, wherein they perceive, for example, a visualization of color upon hearing a particular sound.[16]
