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Tricholoma griseoviolaceum
Shanks
Mycologia 88(3): 497. 1996.
Common Name: none
Pileus
Cap 4-11 cm broad, broadly conic, the margin often undulate, becoming convex-umbonate; surface viscid when moist, purpulish-grey to brownish-grey, radially streaked, darkest at the disk, in age turning drab-brown; flesh thin, pallid to pale grey; odor and taste, farinaceous (of cucumber), especially in age.
Lamellae
Gills adnate to notched, moderately broad, pallid, dingy pale-buff in age.
Stipe
6-14 cm tall, 1-2 cm thick, stuffed, equal to tapering to the base; surface pallid to white, moist, obscurely striate above with a scattering of brown fibrils below; flesh pallid, unchanging; veil absent.
Spores
Spores 5-7 x 3.5-5 µm, elliptical, smooth; spore print white
Habitat
Solitary to gregarious under Oaks (Quercus) and Tanoak (Lithocarpus); fruiting from early to mid-winter.
Edibility
Unknown. It has probably been eaten when misidentified as Tricholoma portentosum, an edible species.
Comments
Tricholoma griseoviolaceum is recognzied by a viscid, purplish-grey to greyish-brown, radially streaked cap, pallid to light grey gills, and farinaceous odor. Tricholoma virgatum is similar in coloration, but is not viscid, has a more conic cap when young and lacks a distinct farinaceous odor.
References
Shanks, Kris M. (1994). A Sytematic Study of Tricholoma in California. Masters Thesis, San Franciso State University: San Francisco, CA. 207 p.
Shanks, Kris M. (1996). New species of Tricholoma from California and Oregon. Mycologia 88: 497-508.
Shanks, Kris M. (1997). The Agaricales (Gilled Fungi) of California. 11. Tricholomataceae II. Tricholoma. Mad River Press: Eureka, CA. 54 p.
Other Descriptions and Photos
(D=Description; I=Illustration; P=Photo; CP=Color Photo)
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.jpg "Tricholoma griseoviolaceum © Michael Wood -- Click for Larger Image")
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