In rural Oaxaca, three Indigenous communities—the Chatino, Chontal, and Chinantec—have preserved a rich folk taxonomy of wild mushrooms. Researchers recorded 43 Indigenous names across 32 mushroom species, revealing detailed systems for naming based on ecology, morphology, and cultural meaning. For example, a “milk mushroom” is named for its latex secretion, and a “God’s mushroom” (likely Psilocybe) is revered for its sacred role. The study found that elders knew more Indigenous names, while younger generations used more Spanish. Still, the shared classification patterns reflect deep ecological knowledge passed down through language, tradition, and daily use.