• Proposed
  • Under Assessment
  • Preliminary Assessed
  • LCAssessed
  • 5Published

Lactarius californiensis Hesler & A.H. Sm.

Search for another Species...

Scientific name
Lactarius californiensis
Author
Hesler & A.H. Sm.
Common names
 
IUCN Specialist Group
Mushroom, Bracket and Puffball
Kingdom
Fungi
Phylum
Basidiomycota
Class
Agaricomycetes
Order
Russulales
Family
Russulaceae
Assessment status
Assessed
Preliminary Category
LC
Proposed by
Noah Siegel
Assessors
Noah Siegel
Comments etc.
James Westrip

Assessment Notes

Justification

Lactarius californiensis is a common species in northern California, likely associated with Tanoak. Often recorded as L. pallescens, a similar pale-capped species, often occurring in the same habitat, with larger spores; and by the misapplied name, L. uvidus; a species not known to occur in western North America.

Population is widespread, and no decline has been observed. We recommend it should be listed as Least Concern (LC)


Taxonomic notes

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.


Why suggested for a Global Red List Assessment?

Lactarius californiensis is a common species in northern California, likely associated with Tanoak. Often recorded as L. pallescens, a similar pale-capped species, often occurring in the same habitat, with larger spores; and by the misapplied name, L. uvidus; a species not known to occur in western North America.

Population is widespread, and no decline has been observed. We recommend it should be listed as Least Concern (LC)


Geographic range

From Santa Cruz County California north into central Oregon in coast and Coast Range forests, also in the northern Sierra Nevada foothills.


Population and Trends

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


Habitat and Ecology

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.

Temperate Forest

Threats

No specific threats have been identified with regards to this species.


Conservation Actions

No specific conservation actions is needed with regards to this species. No specific research is currently needed in regards to this species.


Research needed

No specific research is currently needed in regards to this species.


Use and Trade

None known.


Bibliography

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.


Country occurrence

Regional Population and Trends

Country Trend Redlisted