ARIZ

The University of Arizona Herbarium (ARIZ) is a research collection of over 425,000 dried plant specimens, with emphasis on the plants of the Sonoran Desert region and adjacent areas of the southwestern United States and northwestern Mexico.


Summer hours will be slightly uneven -- please feel free to contact us ahead of your visit (herbarium@ag.arizona.edu), and we will keep this page up to date.


Hours for the week of June 17-21, 2019:

  • Mon: 8-4
  • Tue: 8-4
  • Wed: 8-4
  • Thu: 8-4
  • Fri: 9-4

    • Resources

    Specimens

    Search our collection of over 400,000 specimens.

    Books

    Search our literature collection.

    People

    ARIZ works closely with a number of researchers in Arizona and around the country.

    Services

    ARIZ is dedicated to identifying plants for members of the public, Arizona producers, Poison Control, anyone.

    Featured projects

    Seminars

    Weekly seminars are scheduled throughout the academic year.

    Workshops

    Occasional workshops provide training in plant identification and more.

    Section 6 Grants

    Rare plant research: 2019 DEADLINE: Monday 5/27, 8 am

    National Park Service

    ARIZ and the National Park Service are partnering on a number of projects.

    Legumes of Arizona

    Legumes of Arizona: An Illustrated Flora and Reference will be a comprehensive account of the family Fabaceae in Arizona.

    Flora of SW Arizona

    ARIZ Associated Researchers are documenting modern and fossil plant diversity.

    Funding

    It is an ongoing effort to find funding to keep these projects alive, protect our specimens, and serve the public.

    Types

    We are imaging our nearly 1500 type specimens.
    For a complete listing of our projects, past and present, see our Projects page