Identity
Unique IDELEMENT_GLOBAL.57.9991
Element CodeNFSM000072
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryFungus
Endemicendemic to a single nation
KingdomFungi
PhylumBasidiomycota
ClassBasidiomycetes
OrderBoletales
FamilyBoletaceae
GenusGastroboletus
Concept ReferenceCastellano, 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 Method Rank calculation - Biotics v2
Review Date2023-03-06
Change Date2023-03-06
Edition Date2023-03-06
Edition AuthorsFrancisco J. Camacho (2002), rev. Eberly (2023)
Threat ImpactMedium
Range Extent20,000-200,000 square km (about 8000-80,000 square miles)
Number of Occurrences6 - 20
Rank ReasonsGastroboletus vividus occurs in the western United States from the Sierra Nevada in California to the Oregon Cascades. It is known from less than 20 occurrences. This species is very similar in habitat and stature to Gastroboletus amyloideus. Drought and alterations to the forest composition as a result of an increase in fire intensity and frequency are threats to this species. Most occurrences are on public lands which affords some protection from anthropogenic threats.
Range Extent CommentsGastroboletus vividus occurs in the western United States from the Sierra Nevada in California to the Oregon Cascades.
Occurrences CommentsThere are eight occurrences in Oregon and around 10 in California. It is possible that there specimens or reports of this species that are incorrectly identified as Gastroboletus amyloideus, however taxonomic research is needed to clarify the species boundaries (Siegel 2020).
Threat Impact CommentsThis is a mycorrhizal species that is dependent on a host tree for its carbohydrates. Studies have shown that if the tree is killed, the mycorrhizal fungi die shorty after. The one possibly saving feature of this species is the spore bank. However, nothing is known about the spore bank of this species. This species habitat, especially in the High Sierra Nevada's, may be shifting to a less favorable Abies dominated forest due to more intense, stand replacing fires (Siegel 2020). Prolonged drought may also be a threat (Siegel 2020).