Psilocybe (Fries) Kummer
Der Führer in die Pilzkunde: 21. 1871.

Keys and descriptions of the genus Psilocybe:

• Watling, R. & Gregory, N.M. (1987). British Fungus Flora: Agarics and Boleti. Vol 5. Strophariaceae & Coprinaceae p.p.: Hypholoma, Melanotus, Psilocybe, Stropharia, Lacymaria, & Panaeolus. Royal Botanic Garden: Edinburgh, Scotland.
• Bas, C., Kyper, T.W., Noordeloos, M.E. & Vellinga, E.C. (1999). Flora Agaricina Neerlandica -- Critical monographs on the families of agarics and boleti occurring in the Netherlands. Volume 4. Strophariaceae, Tricholomataceae. A. A.Balkema: Rotterdam, Netherlands.
• Stamets, P. (1996). Psilocybin Mushrooms of the World. Ten Speed Press: Berkeley, CA.

Psilocybe s.l. species known to occur in California:

1. Psilocybe argentina (Speg.) Singer
2. Psilocybe azurescens Stamets & Gartz
3. Psilocybe baeocystis Singer & A.H. Sm.
4. Psilocybe castanella Peck
5. Psilocybe coprophila (Bull.) P. Kumm.
6. Psilocybe cyanescens Wakef.
7. Psilocybe cyanofibrillosa Guzmán & Stamets
8. Psilocybe inquilina (Fr.) Bres.
9. Psilocybe merdaria (Fr.) Ricken
10. Psilocybe montana (Pers.) P. Kumm.
11. Psilocybe pelliculosa (A.H. Sm.) Singer & A.H. Sm.
12. Psilocybe physaloides (Bull.) Quél.
13. Psilocybe semilanceata (Fr.) P. Kumm.
14. Psilocybe stuntzii Guzmán & J. Ott
15. Psilocybe subviscida (Peck) Kauffman

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