• Proposed
  • 2Under Assessment
  • 3Preliminary Assessed
  • 4Assessed
  • 5Published

Xerocomellus salicicola C.F. Schwarz, N. Siegel & J.L. Frank

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Scientific name
Xerocomellus salicicola
C.F. Schwarz, N. Siegel & J.L. Frank
Common names
IUCN Specialist Group
Mushroom, Bracket and Puffball
Assessment status
Proposed by
Noah Siegel
Comments etc.
Noah Siegel

Assessment Notes

Taxonomic notes

Xerocomellus salicicola is a recently described species (Frank et al. 2020). Older records would have been made under the name Xerocomellus (or Boletus) chrysenteron.

Why suggested for a Global Red List Assessment?

Xerocomellus salicicola is a recently described member of the X. ‘chrysenteron’ complex from western North America. More information is needed on range, habitat limitations and populations. At current time, we recommend listing it as Data Deficient (DD).

Geographic range

Western North America, from the Pacific States of USA; Collections are from southern California into Washington. Photographs of specimens appearing to be X. salicicola also occur from southern British Columbia, Canada.

Population and Trends

Being a newly described species, very little in known about population dynamics or trends of this species.

Population Trend:

Habitat and Ecology

Typically in wet, muddy or hard-packed soil in swampy or riparian areas. Ectomycorrhizal, associated with willow (Salix spp.), Cottonwood (Populus trichocarpa), and occasionally in landscaped areas with ornamental birch (Betula spp.) and Linden (Tilia spp.). Habitat details are still lacking.


None currently identified.

Conservation Actions

Research needed

A better understanding of range, and habitat limitations and tree associations of this species.

Use and Trade


Frank, J., Siegel, N., Schwarz, C., Araki, B. and Vellinga, E. 2020. Xerocomellus (Boletaceae) in western North America. Fungal Systematics and Evolution 6: 265-288.

Siegel, N. & Schwarz, C. 2016. Mushrooms of the Redwood Coast. Ten Speed Press: Berkeley, CA. 601 p.

Country occurrence

Regional Population and Trends

Country Trend Redlisted