Peyote is a small, spineless, carrot-shaped cactus that grows in Mexico, Texas, and New Mexico—on both sides of the Rio Grande and further south in regions like Zacatecas and Tamaulipas—thriving in limestone deserts and river valleys under the shade of shrubs that protect it from the harsh sun.

We continue the article begun in our previous installment. Hofmann now describes the properties of the most well-known entheogens of the 1950s—referred to as "psychotomimetics" or "hallucinogens" at the time—among which LSD is counted.

LSD, the medicine of Dr. Albert Hofmann