Described as Lactarius xanthogalactus, from a collection made at Stanford University (Peck 1907). However, this name was rarely used, and collections of this species were referred to as Lactarius chrysorheus and Lactarius vinaceorufescens (Hesler & Smith 1979, Arora 1986).
Research into California Lactarius (Methven 1997) clarified the taxonomic issues.
Lactarius xanthogalactus is a very common milk cap, occurring in both conifer and hardwood forests across California and Oregon, USA.
Population is widespread, and no decline has been observed. We recommend it should be listed as Least Concern (LC)
Very common across most of the forested low and mid elevations parts of California and southern Oregon, USA, occasional north through Oregon; south into northern Baja California, Mexico.
Population is widespread, in many different habitat types. Occurring in both conifer and hardwood forests in coastal and low montane forests across California, with no sign of decline.
Population Trend: Stable
Ectomycorrhizal with hardwoods; especially oaks (Quercus spp.) and Tanoak (Notholithocarpus densiflorus) and conifers, especially Douglas-fir (Pseudotsuga menziesii). Very common, in young to mature forest across California.
No specific threats have been identified with regards to this species.
No specific conservation actions is needed with regards to this species.
No specific research is currently needed in regards to this species.
Arora, D. 1986. Mushrooms Demystified. Ten Speed Press: Berkeley, CA. 959 p.
Hesler, L.R. and Smith, A.H. 1979. North American Species of Lactarius. University of Michigan Press: Ann Arbor, MI. 841 p.
iNaturalist. 2021. Available at: http://www.inaturalist.org
Methven, A.S. 1997. The Agaricales (Gilled Fungi) of California. 10. Russulaceae II. Lactarius. Mad River Press: Eureka, CA. 79 p.
Peck, C.H. 1907. New species of fungi. Bull. Torrey Bot. Club 34: 345-349.
Siegel, N. and Schwarz, C. 2016. Mushrooms of the Redwood Coast. Ten Speed Press: Berkeley, CA. 601 p.