Polyporus The Julian H. Miller Mycological Herbarium is an internationally recognized facility housing over 30,000 specimens of fungi from throughout Georgia and the Southeast, as well as other areas of the world. It serves as an official repository for major U.S. Department of Agriculture regional research projects. The collection is located off campus at the Georgia Museum of Natural History Annex. Items from the Collection Mature Agaric Mature agaric (Agaricus) - An agaric is a mushroom that produces its spores on thin plates, or gills, on the underside of the fruiting body. Apiosporina morbosa (“Black knot”) Apiosporina morbosa (“Black knot”) is a widespread fungal disease that attacks plum and cherry trees. Laetiporus sulphureus (“Bracket fungus”) Laetiporus sulphureus (“Bracket fungus”) is often referred to as shelf fungus, conks or as punk. Trametes versicolor ("Turkey tail”) Trametes versicolor ("Turkey tail”) is one of the most common mushrooms in North American woods, found virtually anywhere there are dead hardwood logs and stumps to decompose.