USGS recently published the dataset of the Iowa State University’s Ada Hayden Herbarium. The Ada Hayden Herbarium includes preserved specimens of Iowa plants and fungi, and contains over 660,000 specimens of vascular plants, bryophytes, fungi, and lichens. This dataset is vascular plants and contains 24,775 records. The Herbarium is a research facility important for taxonomic studies and for plant identification.

For the Herbarium’s Fungi collection, please see iDigBio’s related dataset.