Suillus imbellus (Trappe) Kretzer & T.D. Bruns (1997:589)
Taxonomy & Nomenclature
Synonym/s: Gastroboletus imbellus Trappe in Brittonia 21: 249 (1969)
Conservation Status
Missing (OBIC, 2019:114; NatureServe, 2026) or Rediscovered(?)
Last record: 1960's (1968 or later) (NatureServe, 2026)
There is an unconfirmed iNaturalist photographic observation from 18 November 2020 by Eric & Jen Chandler from Pierce County, Washington state.
Distribution & Habitat
Oregon, USA
Anatomy & Morphology
Biology & Ecology
Hypodigm
Media
References
Original scientific description:
Thiers, Harry D. and Trappe, James M. (1969). Studies in the genus Gastroboletus. Brittonia 21: 244-254.
Other references:
Castellano, M. A., Smith, J. E., O'Dell, T., Cazares, E. and Nugent, S. (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. [p. S1-40]
Kretzer, Annette and Bruns, Thomas D. (1997). Molecular Revisitation of the Genus Gastrosuillus. Mycologia 89(4): 586-589. https://doi.org/10.2307/3760995
NatureServe. (2026). Suillus imbellus. NatureServe Network Biodiversity Location Data accessed through NatureServe Explorer [web application]. NatureServe, Arlington, Virginia. Available at: https://explorer.natureserve.org/ [Accessed on 18 August 2026]
OBIC (Oregon Biodiversity Information Center). (2017). Fungi Conservation Status Assessments. Institute for Natural Resources, Portland State University and Oregon State University. Portland, Oregon and Corvallis, Oregon.
OBIC (Oregon Biodiversity Information Center). (2019). Rare, Threatened and Endangered Species of Oregon. Institute for Natural Resources, Portland State University, Portland, Oregon. 133 pp.
Oregon Natural Heritage Program. (2001). Rare, Threatened and Endangered Plants and Animals of Oregon. Oregon Natural Heritage Program, Portland, Oregon. 94 pp. (98 pp. PDF).
Species Fungorum. (2026). Published on the Internet https://www.speciesfungorum.org, The Royal Botanic Gardens, Kew. [Retrieved 18 August 2026]
https://vanishingflora.proboards.com/thread/2828/gastroboletus-imbellus