''Cortinarius clandestinus'' is a species of fungus in the

Cortinariaceae The Cortinariaceae are a large family of gilled mushrooms found worldwide, containing over 2100 species. The family takes its name from its largest genus, the varied species of the genus ''Cortinarius''. Many genera formerly in the Cortinariaceae ...

family. It was first described in 1932 by

Calvin Henry Kauffman Calvin Henry Kauffman (March 1, 1869–1931) was an American botanist and mycologist. A fellow of the American Association for the Advancement of Science, he was affiliated with the University of Michigan from 1904 until his death, and was known ...

from a specimen collected amongst

moss Mosses are small, non-vascular flowerless plants in the taxonomic division Bryophyta (, ) '' sensu stricto''. Bryophyta (''sensu lato'', Schimp. 1879) may also refer to the parent group bryophytes, which comprise liverworts, mosses, and hor ...

under

Douglas firs The Douglas fir (''Pseudotsuga menziesii'') is an evergreen conifer species in the pine family, Pinaceae. It is native to western North America and is also known as Douglas-fir, Douglas spruce, Oregon pine, and Columbian pine. There are three va ...

and hemlock at

Lake Cushman Lake Cushman is a lake and reservoir on the north fork of the Skokomish River in Mason County, Washington. The lake originally was a long narrow broadening of the Skokomish River formed in a glacial trough and dammed by a terminal moraine from t ...

, Washington. Kauffman states that it is found in the states of

New York New York most commonly refers to: * New York City, the most populous city in the United States, located in the state of New York * New York (state), a state in the northeastern United States New York may also refer to: Film and television * '' ...

Colorado Colorado (, other variants) is a state in the Mountain West subregion of the Western United States. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the western edge of t ...

and

Washington Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered on ...

. The cap is golden brown and dry, with dark brown fibrillose scales. The flesh is yellowish (darker when fresh) and fairly fragile. It has an odour resembling radish. The gills are close and yellowish. The

stem Stem or STEM may refer to: Plant structures * Plant stem, a plant's aboveground axis, made of vascular tissue, off which leaves and flowers hang * Stipe (botany), a stalk to support some other structure * Stipe (mycology), the stem of a mushro ...

is equal or somewhat clavate, with yellowish

veil A veil is an article of clothing or hanging cloth that is intended to cover some part of the head or face, or an object of some significance. Veiling has a long history in European, Asian, and African societies. The practice has been prominent ...

fibrils and perhaps a

ring Ring may refer to: * Ring (jewellery), a round band, usually made of metal, worn as ornamental jewelry * To make a sound with a bell, and the sound made by a bell :(hence) to initiate a telephone connection Arts, entertainment and media Film and ...

demarcation. The European species ''Cortinarius melanotus'' is similar, with a brownish veil on the stem. ''C. cotoneus'' is tougher, with lighter fibrils. ''C. venetus'' var. ''montanus'' is greenish, with a yellow veil when young and a tomentose cap.

References

External links

''Cortinarius clandestinus'' occurrence data
from

GBIF The Global Biodiversity Information Facility (GBIF) is an international organisation that focuses on making scientific data on biodiversity available via the Internet using web services. The data are provided by many institutions from around the ...

INaturalist: ''Cortinarius clandestinus'' - images and occurrences
{{Taxonbar, from=Q49415272 clandestinus Fungi of North America Taxa named by Calvin Henry Kauffman Fungi described in 1932 Fungus species