Ramaria thiersii

R.H. Petersen & Scates

a fungus

G3Vulnerable Found in 1 roadless area NatureServe Explorer →
G3VulnerableGlobal Rank
UnknownThreat Impact
Identity
Unique IDELEMENT_GLOBAL.57.10356
Element CodeNFSM000163
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryFungus
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomFungi
PhylumBasidiomycota
ClassBasidiomycetes
OrderPhallales
FamilyRamariaceae
GenusRamaria
Concept Reference
Castellano, M. A., J. E. Smith, T. O'Dell, E. Cazares and S. Nugent. 1999. Handbook to strategy 1 fungal species in the Northwest Forest Plan. USDA Forest Service General Technical Report PNW-GTR-476. Northwest Research Station, Portland, OR. 195 pp. Online. Available: https://www.fs.usda.gov/pnw/pubs/pnw_gtr476.pdf
Conservation Status
Rank MethodLegacy Rank calculation - Biotics v1
Review Date2019-03-21
Change Date2002-11-11
Edition Date2019-03-21
Edition AuthorsEfren Cazares (2002), rev. M. Russell and R. Hamill (2017), rev. Treher (2019)
Threat ImpactUnknown
Range Extent200,000-2,500,000 square km (about 80,000-1,000,000 square miles)
Number of Occurrences6 - 20
Rank Reasons
Ramaria thiersii occurs in Idaho, Oregon, California, and British Columbia.with about thirteen to 20 known sites. This is a mycorrhizal species associated with late-successional forests. More information is needed about the species ecology, dispersal ability, and fruiting frequency.
Range Extent Comments
Ramaria thiersii is known from Idaho, Oregon, California, and British Columbia.
Occurrences Comments
There are 13 to 20 occurrences known across the species range. There are two sites in northern Idaho, seven sites in California: Sierra Nevada (5), Coastal forest (1), and the North Coast (1), three in Oregon, and one in British Columbia.
Threat Impact Comments
Approximately 90% of sites are not in permanently protected areas. If those sites are logged on a 40 year rotation, around 23% of sites would be impacted over 10 years and around 90% of sites would be impacted over 100 years.
Ecology & Habitat
Other Nations (2)
CanadaNU
ProvinceRankNative
British ColumbiaSUYes
United StatesN3
ProvinceRankNative
OregonS2Yes
Threat Assessments
ThreatScopeSeverityTiming
5 - Biological resource useRestricted (11-30%)UnknownHigh (continuing)
5.3 - Logging & wood harvestingRestricted (11-30%)UnknownHigh (continuing)

Plant Characteristics
DurationEPHEMERAL FRUITING BODY
Economic Value (Genus)No
Roadless Areas (1)
Oregon (1)
AreaForestAcres
Bulldog RockUmpqua National Forest6,056
References (6)
  1. Castellano, M. A., J. E. Smith, T. O'Dell, E. Cazares and S. Nugent. 1999. Handbook to strategy 1 fungal species in the Northwest Forest Plan. USDA Forest Service General Technical Report PNW-GTR-476. Northwest Research Station, Portland, OR. 195 pp. Online. Available: https://www.fs.usda.gov/pnw/pubs/pnw_gtr476.pdf
  2. Index Fungorum and Species Fungorum. 2018. <i>In</i> Index Fungorum-Species Fungorum (<a href="https://indexfungorum.org" target="_blank">https://indexfungorum.org</a> and <a href="https://speciesfungorum.org" target="_blank">https://speciesfungorum.org</a>) database export on 16 June 2018. Royal Botanic Gardens, Kew.
  3. Index Fungorum and Species Fungorum. 2025. <i>In</i> Index Fungorum-Species Fungorum (<a href="https://indexfungorum.org" target="_blank">https://indexfungorum.org</a> and <a href="https://speciesfungorum.org" target="_blank">https://speciesfungorum.org</a>) database export on 29 September 2025. Royal Botanic Gardens, Kew.
  4. Petersen, R.H. 1988. Contributions toward a monograph of <i>Ramaria. </i>VII: New taxa and miscellany. Mycologia 80:223-234.
  5. Siegel, Noah. Personal Communication. Mycologist.
  6. Species Fungorum. Species Fungorum Partnership (CABI, IT IS, Catalogue of Life). http://www.speciesfungorum.org. (accessed 2015)