Described from a Type collection made in Mendocino County, California, USA (Hesler & Smith 1979). Previously refereed to as Lactarius uvidus group, and occasionally misidentified as L. pallescens.
Lactarius californiensis is a common species in northern California, likely associated with Tanoak.
Population is widespread, and no decline has been observed. We recommend it should be listed as Least Concern (LC)
From Santa Cruz County California north into central Oregon in coast and Coast Range forests, also in the northern Sierra Nevada foothills.
Population is widespread, occurring in most of northern California’s mixed evergreen forests. Locally common from Sonoma county north through Humboldt County, California, occasional elsewhere. This species appears to be stable, no decline has been noted.
Population Trend: Stable
Ectomycorrhizal, occurring in mixed evergreen forests on Northern California and southwest Oregon. Likely associated with Tanoak (Notholithocarpus densiflorus), possibly Madrone (Arbutus menziesii) or Douglas-fir (Pseudotsuga menziesii). Fruiting in fall into winter.
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.
Siegel, N. and Schwarz, C. 2016. Mushrooms of the Redwood Coast. Ten Speed Press: Berkeley, CA. 601 p.