Inocybe (Fries) Fries
Monogr. Hymenomyc. Suec. 2: 346. 1863.

Principle characteristics of the genus Inocybe:

• Spore print brown
• Spores smooth, warty, or nodulose; lacking a germ pore
• Annulus absent or fibrillose and evanescent
• Gills free or attached (adnate to adnexed)
• Odor usually present: spermatic, pungent, fruity, or like green corn

Keys and descriptions of the genus Inocybe:

• Artificial Key to Common and Noteworthy Species of Inocybe from the Pacific Northwest (PDF) by P. Brandon Matheny
• Interim "Skeleton Key" to some common species of Inocybe in the Pacific Northwest
• Nishida, F.H. (1989). Key to the Species of Inocybe in California. Mycotaxon 34: 181-196. (PDF)
• Nishida, F.H. (1988). New species of Inocybe from southern California. Mycotaxon 33: 213-222.
• Nishida, F.H. (1987). The Genus Inocybe in California (Agaricales, Basidiomycetes. Unpublished Masters Thesis. California State University, Los Angeles.
• Kauffman, C.H. (1924). Inocybe. North American Flora 10: 227-260.
• Kuyper, T.W. (1986). A Revision of the Genus Inocybe in Europe. I. Subgenus Insperma and the Smooth-Spored Species of Subgenus Inocybe. Rijksherbarium: Leiden, Netherlands.
• Kobayashi, T. (2002). The taxonomic studies of the genus Inocybe. J. Cramer: Berlin.
• Grund, D.W. & D.E. Stuntz. (1969-1977). Nova Scotian Inocybe I-IV. Mycologia 60: 406-425; ibid. 62: 925-939; ibid. 67: 19-31; ibid. 69: 392-408.
• Stuntz D.E. (1947). Studies in the genus Inocybe. I. New and noteworthy species from Washington. Mycologia 39:21–55.
• Cripps, C.L. (1997). The genus Inocybe in Montana aspen stands. Mycologia 89: 670-688.

Inocybe species known to occur in California:

1. Inocybe adaequata (Britzelm.) Sacc.
2. Inocybe agardhii (Lund) Orton
3. Inocybe albodisca Peck
4. Inocybe amblyspora Kühner
5. Inocybe auricoma (Batsch) J. Lange
6. Inocybe bakeri Peck
7. Inocybe bresadolae Massee
8. Inocybe brunnescens Earle
9. Inocybe bulbosa Peck
10. Inocybe calamistrata (Fr.) Quél.
11. Inocybe californica Kauffman
12. Inocybe chelanensis D.E. Stuntz
13. Inocybe chrysocephala F.H. Nishida
14. Inocbye cinnamomea A.H. Sm.
15. Inocybe corydalina Quél.
16. Inocybe decipiens Bres.
17. Inocybe dulcamara (Alb. & Schwein.) P. Kumm.
18. Inocybe fallax Peck
19. Inocybe fastigielia G.F. Atk.
20. Inocybe flocculosa (Berk.) Sacc.
21. Inocybe fraudans (Britzelm.) Sacc. (= I. pryiodora)
22. Inocybe geophylla:
1. var. geophylla (Pers.) P. Kumm.
2. var. lilacina Gillet
23. Inocybe godeyi Gillet
24. Inocybe griseolilacina
25. Inocybe hemileuca F.H. Nishida & D.E. Stuntz
26. Inocybe hirtella Bres.
27. Inocybe inodora Velen.
28. Inocybe insinuata Kauffman
29. Inocybe kaufmanii A.H. Sm.
30. Inocybe lacera (Fr.) P. Kumm.
31. Inocybe laetior D.E. Stuntz
32. Inocybe lanuginosa (Bull.) P. Kumm.
33. Inocybe leiocephala D.E. Stuntz
34. Inocybe leptocystis G.F. Atk.
35. Inocybe leptophylla G.F. Atk.
36. Inocybe longicystis G.F. Atk.
37. Inocybe menthi-gustans F.H. Nishida
38. Inocybe mixtilis (Britzelm.) Sacc.
39. Inocybe muricellata Bres.
40. Inocybe nigrescens G.F. Atk.
41. Inocybe oblectabilis (Britzelm.) Sacc.
42. Inocybe olida Maire
43. Inocybe olympiana A.H. Sm.
44. Inocybe petiginosa (Fr.) Gillet
45. Inocbye phaeocomis var. major (S.W. Peterson) Kuyper
46. Inocybe phaeodisca Kühner
47. Inocybe phaeoleuca Kühner
48. Inocybe quietiodor M. Bon
49. Inocybe retipes G.F. Atk.
50. Inocybe rimosa (Fr.) P. Kumm. (=I. fastigiata)
51. Inocybe sierraensis Kropp & Matheny
52. Inocybe sororia D.E. Stuntz
53. Inocybe splendens Heim
54. Inocybe subdestricta Kauffman
55. Inocybe subochracea (Peck) Earle
56. Inocybe umbratica Quél.
57. Inocybe vaccina Kühner
58. Inocybe variabillima Speg
59. Inocybe vinosistipitata Grund & D.E. Stuntz
60. Inocybe whitei (Berk. & Broome) Sacc. (=I. pudica)
61. Inocybe xanthomelas Boursier & Kühner

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