San Diego State University Herbarium (SDSU)

Welcome to the SDSU Herbarium!

Mailing Address:

SDSU Herbarium
Dr. Michael Simpson, curator
Department of Biology
San Diego State University
San Diego, California 92182, USA
SDSU Herbarium
Dr. Lluvia Flores-Rentería, associate curator
Department of Biology
San Diego State University
San Diego, California 92182, USA


   The San Diego State University Herbarium (SDSU) is a depository of over 22,000 pressed and mounted plant specimens used in research and teaching. The purpose of these specimens is: 1) to serve as voucher documentation for research projects; 2) to serve as resources for plant identification; and 3) to serve as exemplars in plant courses. In addition, the herbarium both receives and provides loans of plant specimens used in active systematic research. The herbarium collection specializes in land plant specimens from San Diego County, California, and Baja California, with some collections from Argentina, Australia, Chile, and the south Pacific. See Publications utilizing and citing specimens from the SDSU Herbarium.


iDigBio 2018 Summit Report

Consortium of California Herbaria 2 (CCH2) Website
California Phenology

KPBS article about our NSF-funded digitization grant
  SDSU News Center Article on NSF-funded digitization grant we just received!

Publication of: Dudleya hendrixii, A new, rare species from Colonet Mesa, Baja California
   Named after guitarist Jimi Hendrix! 
McCabe, Dodero, and Simpson 2016, Madroño 63: 359-365.
Articles on naming of Dudleya hendrixii
   L. A. Times
San Diego State University

   San Diego Union Tribune


Some Plants of Chile / Algunas Plantas de Chile

Nice video on The Plant Family Tree (Kew Botanic Gardens)

Cryptantha Taxonomy and Images

Plant Systematics Resources 

SDSU is a member of:
Consortium of California 2 
Consortium of California Herbaria (California records only)
BajaFlora (Baja California and Baja California Sur, Mexico records only)

Our records are entirely databased.
are currently being imaged as part of the California Phenology NSF-supported TCN grant.

   The Curator of the SDSU Herbarium is Dr. Michael Simpson, whose primary duty as curator is to oversee the maintenance, organization, and use of the collection and to facilitate additions to the herbarium.

   The Herbarium is open by appointment only, so please contact us before coming to visit SDSU. Loans of specimens are available through registered herbaria upon request.

Contact Information:
Dr. Michael G. Simpson, Curator

619-594-8012 (herbarium)