San Diego State University Herbarium (SDSU)

Welcome to the SDSU Herbarium!

We are a member of:
Consortium of California Herbaria 1 (CCH1)
Consortium of California Herbaria 2 (CCH2)
Society of Herbarium Curators (SHC)
Southwest Environmental Information Network (SEINet)

See Also:
San Diego State University Field Stations

Mailing Address:

SDSU Herbarium
Dr. Michael Simpson, curator
Department of Biology
5500 Campanile Drive
San Diego State University
San Diego, California 92182, USA
SDSU Herbarium
Dr. Lluvia Flores-Rentería, associate curator
Department of Biology
5500 Campanile Drive
San Diego State University
San Diego, California 92182, USA

Nuri Benet-Pierce, Research Associate
Kyle Gunther, Collections Manager
Alice Hossfeld, Curatorial Assistant
Lee Simpson, Technician
Damika Wegielewski, Curatorial Assistant


   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.


The SDSU Herbarium will be part of the SDSU Science Sampler, Sat. 23 March 2019

We have imaged 5% of our herbarium specimens! We are accelerating to do the entire collection in 2019!

iDigBio 2018 Summit Report

Consortium of California Herbaria 2 (CCH2) Website
California Phenology

KPBS article and video clip 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


Field Botany of San Diego County course: General Website & Registration

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 Herbaria 1 (California records only; note: not recently updated!)
Consortium of California 2 (all records)
(Baja California and Baja California Sur, Mexico records only)
(all records)

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)