Described as Gomphidius tomentosus, from a Washington, USA Type collection (Murrill 1912), later transferred into the genus Chroogomphus (Miller 1964) where is resides today.
Chroogomphus tomentosus is a common species in hemlock forests of northern California, the Pacific Northwest, into south-central Alaska. No decline has been recorded; it should be listed as Least Concern (LC).
Widespread in western North America; on the coast, it occurs from Sonoma County in northern California, USA, north into South-central Alaska. In the mountains, it occurs from the southern Cascade Range in Oregon, north into British Columbia, Canada, with scattered records east into the northern Rocky Mountains.
Population is widespread, and it is a very common species. No decline has been recorded.
Population Trend: Stable
Chroogomphus tomentosus has an obligatory relationship (likely as parasite) with Aureoboletus mirabilis, which in turn is ectomycorrhizal with hemlock (Tsuga spp.). It is especially common in the Pacific Northwest into southeast Alaska, fruiting in late summer and fall.
No specific threats have been identified with regards to this species.
No specific conservation actions have been identified with regards to this species.
No specific research is needed with regards to this species.
Chroogomphus tomentosus is edible, but only occasionally collected for food.
iNaturalist. 2020. http://www.inaturalist.org
Miller Jr., O.K. 1964. Monograph of Chroogomphus (Gomphidiaceae). Mycologia 56: 526-549.
Miller Jr., O.K. 2003. The Gomphidiaceae revisited: a worldwide perspective. Mycologia 95(1): 176-183.
Murrill, W.A. 1912. The Agaricaceae of the Pacific coast—III. Mycologia 4(6): 291-308. iNaturalist. 2020. http://www.inaturalist.org
Siegel, N. and Schwarz, C. 2016. Mushrooms of the Redwood Coast. Ten Speed Press: Berkeley, CA. 601 p.