• Newsletter icon
  • Facebook icon
  • Twitter icon
  • Pinterest icon
  • Blog icon
  • YouTube icon
  • DBG Instagram

Sam Mitchel Herbarium of Fungi

Search the Sam Mitchel Herbarium of Fungi database at MyCoPortal

The Sam Mitchel Herbarium of Fungi is the largest and best curated mycological collection of the Southern Rocky Mountain Region, with approximately 14,000 preserved and documented specimens of mushrooms and other fungi. The collection includes more than 2,500 species within approximately 300 genera.

We have an excellent, well-documented representation of native Basidiomycetes with a particularly strong collection of the Russulales, as well as the genera Hebeloma, Agaricus and Suillus. Our strengths include gasteroid collections from the prairies and grasslands of Colorado and especially noteworthy collections of “snowbank” fungi. Many rare cup fungi stand out in our extensive Ascomycete collection. Our collections are supported by an extensive literature collection. Aproximately 250 species of Colorado Mycomycetes are also included.

Our valuable and often unique collections are sought after for loans to other institutions here and abroad. There are 36 TYPE collections of Colorado fungi housed in the Sam Mitchel Herbarium.

Photo by Vera EvensonPublic Service

The herbarium staff identifies fungi for the public, Rocky Mountain Poison Center and other researchers. For toxicology experts and other qualified researchers, the collection is available for study and includes vouchered specimens.

Hours: Monday-Thursday: 9 a.m. - 2 p.m. Contact our staff to make an appointment for identification services. Note: We do not consult on edibility or identify species for consumption. Please see our fees for identification services.

Field projects

Photo by Vera EvensonThe mycology staff and volunteers continually survey the varied habitats of Colorado and adjoining states to collect and document the mycoflora throughout the fruiting season.

  • Our research on subalpine and alpine mycorrhizal fungi begins in the spring with trips to the edge of the snowbanks where melting snow and the intense sun support the ‘fruiting’ of mycorrhizal fungi. Throughout the decades we have documented hundreds of vouchers of these unique fungi, known only in a few parts of the world.
  • Collecting in subalpine and alpine areas during the summer months has produced thousands of specimens of mycorrhizal fungi, thus documenting the association of those fungi with their plant associates. Our extensive collection of Gasteromycete - puffballs and their allies - is a particular strength. Most of these saprobes are found in our prairie habitats throughout the season.
  • Staff and volunteers actively participate in various intensive inter-disciplinary field studies, known as bioblitzes. Our collections from the Rocky Flats Bioblitz, Soapstone Prairie Bioblitz, Rocky Mountain Park Mycoblitz and the JE Ranch SE Canyonlands Bioblitz have yielded many unique specimens, some previously unknown to the area.