The Herbarium

The Arboretum herbarium houses more than 172,000 dried plant specimens and 19,000 lichens, many from Illinois and Missouri. The herbarium's strongest collections are its (1) active and nearly comprehensive contemporary collection of the flora of the 24-county Chicago region and (2) broad collection of woody plants of the northern Temperate zone, both cultivated and spontaneous. Our Chicago region collections are available online through vPlants, and through funding from IMLS we have developed an online portal for all of our collections. Other important collections include:

Herbarium opportunities

The herbarium depends on our more than 30 active volunteers, who collect plants, mount specimens, file and accession, make labels, enter data, develop databases and aid in nomenclatural research, and assist in many other tasks. The herbarium is a lively and enjoyable place to work. If you are interested in volunteering with us, you can contact Andrew Hipp, Plant Systematist and Herbarium Curator, or Bethany Brown, Research and Herbarium Assistant, to discuss possibilities.