Stropharia (Fries) Quélet
Champignons Jura et Vosges 1: 10. 1872.

Keys and descriptions of the genus Stropharia:

• 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.

Stropharia species known to occur in California:

1. Stopharia aeruginosa
2. Stopharia albonitens
3. Stopharia albivelata
4. Stropharia ambigua
5. Stopharia bimellata
6. Stopharia caerulea
7. Stropharia coronilla
8. Stopharia hornemanni
9. Stopharia kaufmanni
10. Stopharia luteonitens
11. Stropharia riparia
12. Stopharia rugosoannulata
13. Stropharia semiglobata
    1. var. semiglobata
    2. var. stercoraria
14. Stopharia squamosa