Question: When was the publication whose effects the Maxwellians chronicled originally written?
Sentence (from "Psilocybin mushroom"): Biological genera containing psilocybin mushrooms include "Copelandia", "Galerina", "Gymnopilus", "Inocybe", "Mycena", "Panaeolus"," Pholiotina", "Pluteus", and "Psilocybe".
Relevant evidence: No