Described from a Type collection made in Washington, USA (Nuytinck & Ammirati 2014).
Older records were called by the European name Lactarius deliciosus; which was applied to a complex of species in North America.
It is a member of Lactarius sect. Deliciosi; which still has a number of underscibed species in western North America.
Lactarius aestivus is a common species in northern California and the Pacific Northwest in fir and hemlock forest.
Population is widespread and stable; it should be listed as Least Concern (LC).
Occurring in western North America, from the northern California Coast and northern Sierra Nevada, north through the Cascade Range, and widespread in coastal and montane forests throughout the Pacific Northwest. Being a recently described species, (Nuytinck & Ammirati 2014), geographical parameters are lacking data; this species likely occurs north into British Columbia, and possibly into southeast Alaska, and east into the Rocky Mountains.
Lactarius aestivus is a common species with a widespread population; occurring in young to mature hemlock (Tsuga spp.) and fir (Abies spp.) forests. No decline has been observed.
Population Trend: Stable
Ectomycorrhizal with fir (Abies spp.) and hemlock (Tsuga spp.). Common in late summer and fall in the Pacific Northwest, and fall into winter in California; growing in young to mature forests across northern California and the Pacific Northwest.
No threats have been identified with regards to this species.
No specific conservation actions is needed with regards to this species.
Continued data regarding range of this species.
This species is edible, and occasionally collected for food.
iNaturalist. 2021. Available at: http://www.inaturalist.org
Nuytinck, J. and Ammirati, J. 2014. A new species of Lactarius sect. Deliciosi (Russulales, Basidiomycota) from western North America, Botany, 2014, 92(10): 767-774.
Siegel, N. and Schwarz, C. 2016. Mushrooms of the Redwood Coast. Ten Speed Press: Berkeley, CA. 601 p.