Psilocybe acutipilea is a species of mushroom in the family Hymenogastraceae. It was discovered in October 1881 in Apiahy, Sao Paulo State, Brazil by Carlos Spegazzini, and described by him as a new species of Deconica in 1889. Gastón Guzmán transferred it to Psilocybe in 1978, but Ramirez-Cruz considered it a possible synonym of Psilocybe mexicana, but the type specimen was too moldy for them to be certain.
- Ramírez-Cruz, Virginia; Guzmán, Gastón; Guzmán-Dávalos, Laura (2013). "Type studies of Psilocybe sensu lato (Strophariaceae, Agaricales)". Sydowia. 65: 277–319.
- "Psilocybe acutipilea". Mycobank. Fungal Biodiversity Center. Retrieved 23 December 2015.