The Milwaukee Public Museum Herbarium houses around 200,000 specimens comprising vascular plants, nonvascular plants, fungi and lichens. Over 50% of the holdings are from the Upper Great Lakes region, 30% from the rest of North America and the remainder features a good representation of taxa worldwide. Notable collectors include: John T. Curtis, Albert M. Fuller, Herman Hayward, Emil P. Kruschke, Charles E. Monroe, Huron H. Smith, W. Carl Taylor. Significant collections include: Ethnobotanical plants of the Ho-Chunk, Menominee, Meskwaki, Ojibwe, Oneida, and Potawatomi Tribes of the Great Lakes region; Isoetes of the world; Aster and Viola of eastern North America; Carroll University Herbarium.