The Arizona State University Lichen Herbarium currently houses over 109,000 fully accessioned and databased lichen specimens from all over the world. A significant fraction of these specimens are being revised in the context of the Greater Sonoran Desert Flora Project funded by the National Science Foundation.

Due to lack of personnel, the ASU Lichen Herbarium will be closed during each summer (May 15 through Aug. 15).

The third and final volume of the Greater Sonoran Desert Lichen Flora has been published!! Find out how to order a copy...

Lichens are the most complex form of life now known to have survived prolonged exposure to space! Read More Here...

We remember Bruce Douglas Ryan

Associate Lichen Curator, ASU Lichen Herbarium
Born: September 13, 1950
Died: January 22, 2004

Browse the HISTORIC COLLECTION
of Brother Arséne Brouard, New Mexico