Welcome to the Robert L. Gilbertson Mycological Herbarium!

Fungi represent a unique branch on the tree of life, and together comprise the majority of plant pathogens, as well as numerous species of ecological importance as mutualists, decomposers, and parasites of plants and animals. Over 1.5 million species of fungi are thought to exist worldwide, with the vast majority yet to be discovered - and their ecological roles, genetic diversity, and applications in human endeavors yet to be elucidated.

The Gilbertson Mycological Herbarium at the University of Arizona houses over 40,000 accessioned specimens of fungi and fungus-like organisms, with special collections of rusts, polypores, and corticioid fungi. Our holdings are global in origin, with special attention to the macrofungi of Arizona and the southwestern United States, Mexico, Hawaii, Alaska, and the Gulf Coast region of the USA. Recent expansions include over 8,000 accessions of endophytic fungi from arctic, boreal, temperate, and tropical sites.


Location and hours:  The Mycological Herbarium is located in historic Herring Hall on the UofA campus, and is open on weekdays (9am to 5pm). As part of ARIZ, we share this space with the Vascular Plant Herbarium.

Information and tours:  Contact Betsy Arnold by email or at 520.621.7212. Our mailing address is 1140 E. South Campus Drive, Forbes 303, Department of Plant Sciences, University of Arizona, Tucson, AZ 85721.