Growing by itself. The largest Psilocybe we found that day.
Specimen deposited in the herbarium at the Institute of Ecology in Xalapa.
Altitude: 2600 meters.
Pseudorhiza absent. Stipe base with a bulb.
Pleurocystidia abundant, sometimes forked or capitate. 20 – 30 × 5 – 7.
Cheilocystidia sometimes long and stick-like, 20 – 30 × 5 – 7. Sometimes irregularly forked, most approximately 20 × 3.