California Academy of Sciences (CAS)

The herbarium of the California Academy of Sciences (CAS) is the largest collection of vascular plants in the western U.S. It is the sixth largest collection in the United States. Together with the Herbarium of the University of California at Berkeley (UC) the San Francisco Bay area is regarded as a National Resource Center for systematic botany. These two major collections have an informal agreement to avoid duplication, thus providing botanists with a rich and varied resource for research.
Contact: Debra Trock, Collections Manager, Herbarium (dtrock@calacademy.org)
Collection Type: Preserved Specimens
Management: Data snapshot of local collection database
Last Update:
Digital Metadata: EML File
Collection Statistics
  • 55,568 specimen records
  • 31,092 (56%) georeferenced
  • 55,479 (100%) with images
  • 53,819 (97%) identified to species
  • 65 families
  • 354 genera
  • 1,684 species
  • 1,743 total taxa (including subsp. and var.)
Extra Statistics
Geographic Distribution
Click on the specimen record counts within the parenthesis to return the records for that term