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

Hypholoma is a genus of small to medium sized saprophytic mushrooms. In the past, Naematoloma (or Nematoloma) was used as a name for this genus.

Principle characteristics of the genus Hypholoma:

• Spore print dark brown, dark redish-brown, purple-brown, dark grey-brown
• Chrysocystidia present
• Spores smooth, with an apical pore
• Annulus typcially absent, sometimes a cortina

Keys and descriptions of the genus Hypholoma:

• Smith, A.H. (1951). The North American species of Naematoloma. Mycologia 43: 467-521.
• 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. (1978). Psilocybe mushrooms and their allies.Homestead Book Co.: Seattle, WA.

Hypholoma species known to occur in California:

1. Hypholoma capnoides (Fr.) P. Kumm.
2. Hypholoma dispersum (Fr.) Quél.
3. Hypholoma elongatum (Pers.) Ricken
4. Hypholoma ericaeum (Pers.) Kühner
5. Hypholoma fasciculare (Fr.) P. Kumm.
6. Hypholoma olivaceotinctum (Kauffman) Pomerl.
7. Hypholoma popperianum (Singer) Guzmán
8. Hypholoma tuberosum Redhead & Kroeger

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