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.


Covid-19 update: The UA Herbarium is open by appointment.
This summer (2022) we are happy to welcome volunteers, researchers, and visitors on a limited basis, and by appointment only. We anticipate offering a grass workshop in late summer (please see "Workshops", below) and starting our regularly scheduled in-person seminars in Fall.
We are available by email and by phone, and we look forward to seeing and/or hearing from you.

herbarium @ cals.arizona.edu
520 621-7243

In April, 2022, we gathered for a celebration of the life and legacy of Richard Felger. Full length video is available here.


Resources


Specimens


Search our collection of over 400,000 specimens.

Fungi


Visit the Gilbertson Mycological Herbarium.

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: next deadline Oct 31, 2021

Books


Searchable database of our extensive botanical library

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