Current name - Amanita jacksonii Pomerl., Naturaliste Canadien 111 (3): 329 (1984) [MB#124588]
Basionym - Amanita umbonata Pomerl., Flore des Champignons au Quebec et regions limitrophes: 516 (1980) [MB#124364]
Taxon synonyms- Amanita tullossii Guzmán & Ram.-Guill., Bibliotheca Mycologica 187:33 (2001) [MB#4855191]
This species could be getting mistaken for the Amanita species that produce toxic compounds and as a result, humans could be a larger threat to this species than is currently known.
Commonly found from Quebec to Mexico. 2,265 observations on iNaturalist. Spread throughout the Eastern United States, Canada, southern Mexico, Guatemala, Honduras, Netherlands, El Salvador, Colombia. The preferred habitat is temperate forests. Ectomycorrhizal fungi so the default generational time period is 50 years. The population trend seems to be unknown, but the fungus seems pretty common throughout its range.
Population Trend: Uncertain
The trophic mode of this species is mutualistic. The species is mycorrhizal with oak and pine trees, and has been primarily found in pure conifer forests, deciduous woods, cloud forests of pine and oak, and mixed forests. Common in oak and pine forests and fields of the Piedmont area in North Carolina.
Deforestation of oak and pine forests.
Conserve forests of oak and pine, old-growth forests. Limit human expansion into wooded areas.
Population data is lacking. Threat data is lacking.
This species is edible for humans, enjoyed throughout its range, as well as eaten by Eastern gray squirrels.
EditNGX. (2020, August 7). Focus on mushrooms: American Caesar, Amanita jacksonii. NGXchange. https://ngxchange.org/focus-on-mushrooms-american-caesar-amanita-jacksonii/
Index Fungorum—Names Record. (n.d.). Retrieved December 3, 2020, from http://www.indexfungorum.org/Names/NamesRecord.asp?RecordID=124588
Mushroom Observer. (n.d.). Retrieved December 3, 2020, from https://mushroomobserver.org/observer/index_observation?by=num_views&q=1YjI6
Mycobank. (n.d.). Retrieved December 3, 2020, from https://www.mycobank.org/page/Simple names search
Observations. (n.d.). INaturalist. Retrieved December 3, 2020, from https://www.inaturalist.org/observations
Search. (n.d.). Retrieved December 3, 2020, from https://www.gbif.org/species/5452395
Umansky, J. (2019, July 28). Amanita jacksonii aka American Caesar’s Mushroom. Larder Delicatessen and Bakery. https://larderdb.com/amanita-jacksonii-aka-american-caesars-mushroom/
van der Nest, M. A., Beirn, L. A., Crouch, J. A., Demers, J. E., de Beer, Z. W., De Vos, L., Gordon, T. R., Moncalvo, J.-M., Naidoo, K., Sanchez-Ramirez, S., Roodt, D., Santana, Q. C., Slinski, S. L., Stata, M., Taerum, S. J., Wilken, P. M., Wilson, A. M., Wingfield, M. J., & Wingfield, B. D. (2014). Draft genomes of Amanita jacksonii, Ceratocystis albifundus, Fusarium circinatum, Huntiella omanensis, Leptographium procerum, Rutstroemia sydowiana, and Sclerotinia echinophila. IMA Fungus, 5(2), 472–486. https://doi.org/10.5598/imafungus.2014.05.02.11