- Proposed
- Under Assessment
- 3Preliminary Assessed
- 4Assessed
- 5Published
Tylopilus humilis Thiers
- Scientific name
- Tylopilus humilis
- Author
- Thiers
- Common names
- IUCN Specialist Group
Mushroom, Bracket and Puffball- Kingdom
- Fungi
- Phylum
- Basidiomycota
- Class
- Agaricomycetes
- Order
- Boletales
- Family
- Boletaceae
- Assessment status
- Under Assessment
- Proposed by
- Noah Siegel
- Assessors
- Noah Siegel
- Comments etc.
- James Westrip
Assessment Notes
Justification
Tylopilus humilis is a rare bolete known from <10 locations in coastal forests of northern California.
Until much needed modern taxonomic work has been done on California Tylopilus, I recommend listing this species as Data Deficient (DD).
Taxonomic notes
Described from collections made near Mendocino, California, USA (Thiers 1966).
Why suggested for a Global Red List Assessment?
Tylopilus humilis is a rare bolete known from <10 locations in coastal forests of northern California.
Until much needed modern taxonomic work has been done on California Tylopilus, I recommend listing this species as Data Deficient (DD).
Geographic range
Known from scattered sites from Santa Cruz County, California, north into Mendocino County, California, USA.
Population and Trends
Population is very restricted; currently known from <10 disjunct populations from Mendocino County, California in the north and Santa Cruz County in the south. Data to assess trends is lacking for this species.
Population Trend: Uncertain
Habitat and Ecology
Ectomycorrhizal, based on collection data, either with (Pinus spp.), or possibly with manzanita (Arctostaphylos spp.) or Madrone (Arbutus menziesii). Typically fruiting under duff, and rarely breaking to surface. Fruiting in fall and early winter.
Threats
No threats have been directly linked to this species. Overall, the habitat has threats from urban development leading to loss of habitat, and sand mining near the Santa Cruz populations.
Conservation Actions
Protect any populations found on unprotected lands. Invasive plant removal; ie. Scotch broom (Cytisus scoparius) from areas this species in know to occur.
Research needed
Modern taxonomic work on Tylopilus species in California. Assess population trends.
Use and Trade
None known.
Bibliography
Siegel, N. and Schwarz, C. 2016. Mushrooms of the Redwood Coast. Ten Speed Press: Berkeley, CA. 601 p.
Thiers, H.D. 1966. California boletes II. Mycologia 58(6): 815-826.
Thiers, H.D. 1975. California Mushrooms—A Field Guide to the Boletes. Hafner Press: New York, NY. 261 p
Country occurrence
Regional Population and Trends
| Country | Trend | Redlisted |
|---|