Species Summary

BC Conservation Data Centre: Species Summary

Dendrocollybia racemosa

Scientific Name:

Dendrocollybia racemosa (Pers. : Fr.) Petersen & Redhead

Scientific Name Synonyms:

Collybia racemosa

English Name:

Classification / Taxonomy

Scientific Name - Concept Reference:

Castellano, M.A., E. Cazares, B. Fondrick, and T. Dreisbach. 2003. Handbook to additional fungal species of Special Concern in the Northwest Forest Plan. Gen. Tech. Rep. PNW-GTR-572. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 144 pp. Online. Available: https://www.fs.usda.gov/pnw/pubs/pnw_gtr572.pdf

Classification Level:

Species

Species Group:

Fungus

Species Code:

Kingdom	Phylum	Class	Order	Family
Fungi	Basidiomycota	Basidiomycetes	Agaricales	Tricholomataceae

Conservation Status / Legal Designation

Global Status:

G4 (Jul 2022)

Provincial Status:

S3S4 (Mar 2021)

BC List:

Yellow

Provincial FRPA list:

Provincial Wildlife Act:

COSEWIC Status:

SARA Schedule:

General Status Canada:

Ecology & Life History

General Description:

Technical Description:

Similar Species:

Habitats:
(Type / Subtype / Dependence)

Global Habitat Comments:

Occurs in mixed hardwood-conifer forests, usually clustered on the remains of rotting mushrooms, particularly those of Lactarius and Russula species (Desjardin et al. 2014, Siegel et al. 2019). One host mushroom species is Russula crassotunicata (Machnicki et al. 2006).

Provincial Phenology:
(1st half of month/
2nd half of month)

Elevation (m) (min / max):

Provincial:

Known Pests:

Pollen Vector:

Pollinator:

Dispersal:

Provincial Inventory

Inventory Priority:

Ownership of occurrences (Known locations):

Inventory Need:

Economic Attributes

Distribution

Endemic:

Global Range Comment:

Dendrocollybia racemosa has a large range (about 21 million square kilometers) in the northern hemisphere (including Eastern North America, and Western Europe), but it is rare outside the Pacific Northwest of the United States, and British Columbia, Canada (Bazzicalupo et al. 2022, Castellano et al. 2003, Desjardin 1998, iNaturalist 2022, MyCoPortal 2022). It is common and widespread in the California coastal province, and occasional in the foothills of the Sierra Nevada, it has also been documented in Oregon, and Washington, throughout the range of the northern spotted owl (ISMS-ONH 2002, Siegel et al. 2019).

Disjunct, more common elsewhere:

Peripheral, major distribution elsewhere:

Authors / Contributors

Global Information Author:

A. Tomaino (2017), rev. C. Nordman (2022).

Last Updated:

Jul 22, 2022

Provincial Information Author:

Last Updated:

Last Literature Search:

References and Related Literature

Desjardin, D., M. Wood, and F. Stevens. 2014. California Mushrooms: The Comprehensive Identification Guide. Timber Press Inc., Portland, Oregon. 559 pp.

Machnicki, N., L. L. Wright, A. Allen, C. P. Robertson, C. Meyer, J. M. Birkebak, and J. F. Ammirati. 2006. Russula crassotunicata identified as host for Dendrocollybia racemosa. North American Fungi [Online] 1.1 (2006): 1-7. DOI: http://dx.doi.org/10.2509/pnwf.2006.001.009 Online. Available: https://openjournals.wsu.edu/index.php/pnwfungi/article/view/1024 (Accessed 2022).

Siegel, N., E.C. Vellinga, C. Schwarz, M.A. Castellano, and D. Ikeda. 2019. A Field Guide to the Rare Fungi of California?s National Forests. Bookmobile. Minneapolis, MN. 313 pp. Online. Available: https://www.mykoweb.com/CAF/PDF/Rare_Fungi_of_CA_National_Forests.pdf.

Please visit the website Conservation Status Ranks for definitions of the data fields used in this summary report.

Suggested Citation:

B.C. Conservation Data Centre. 2022. Species Summary: Dendrocollybia racemosa. B.C. Minist. of Environment. Available: https://a100.gov.bc.ca/pub/eswp/ (accessed Jun 8, 2026).