''Gomphidius nigricans'' is a

mushroom A mushroom or toadstool is the fleshy, spore-bearing Sporocarp (fungi), fruiting body of a fungus, typically produced above ground on soil or another food source. ''Toadstool'' generally refers to a poisonous mushroom. The standard for the n ...

in the family

Gomphidiaceae The Gomphidiaceae are a family of mushroom-forming fungi in the order Boletales. Unlike other boletes, all members of Gomphidiaceae (except for ''Gomphogaster'') are agarics, having gills instead of pores. Member genera include '' Chroogomphus'', ...

that is found in eastern North America to as far west as Michigan.

References

External links

* Boletales Fungi described in 1897 Fungi of North America Taxa named by Charles Horton Peck Fungus species {{Boletales-stub