Inocybe citrifolia M.G. Wood &
Photo: Part of the type collection (mgw-521)
Common Name: none
Cap 2-4 cm broad; brownish yellow to brownish orange, the disk darker and the margin paler; umbonate, becoming ± plane at maturity; distinctly radially fibrillose; oder spermatic; taste mild to slightly bitter or spermatic.
Gills yellowish, becoming darker from spores with age; with multiple series of lamellulae.
Stem yellowish, 3-7 mm broad x 45-70 mm long; equal or enlarged towards base which is typically sub-bulbous to bulbous; longitudinally striate and minutely hairy.
Spores 11.4 x 5.3-5.7 µm, smooth, brown in KOH.
Scattered, to gregarious under tanbark oak (Lithocarpus densiflorus) with Douglas fir (Pseudotsuga menziesii) nearby; January.
This distinctively colored Inocybe is known only from the type locality in San Mateo County.
Nishida, F.H. (1987). The Genus Inocybe in Southern California (Agaricales, Basidiomycetes). Masters Thesis. California State University, Los Angeles: Los Angeles, CA. 315 p.
Nishida, F.H. (1988). New species of Inocybe from Southern California. Mycotaxon 33: 213-222.
Nishida, F.H. (1989). Key to the Species of Inocybe in California. Mycotaxon 34(1): 181-196.