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RSA - California Botanic Garden Xylarium
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The combined Herbarium of California Botanic Garden (RSA) and Pomona College (POM) is a museum-quality collection of vascular plant and bryophyte specimens. With current holdings totaling over 1,250,000 specimens, the Herbarium is the third largest in California. The Herbarium is recognized throughout the world for its strength in documenting the diversity, distribution, variation, and ecology of more than 6,500 species of flowering plants, conifers, and ferns in California, which constitutes nearly 50% of the total collection. The holdings from Southern California exceed 250,000 and are unsurpassed by any other herbarium. Approximately 95% of the collection is composed of mounted sheets and filed according to a standardized system of classification. Ancillary collections that augment the collection include a cone & fruit collection, wood collection, fluid preserved collection, and pollen and anatomy slide collection.

Contacts
Administrative Curator: Mare Nazaire mnazaire@calbg.org
Cite this collection:
RSA - California Botanic Garden Xylarium. Occurrence dataset (ID: ) accessed via the Symbiota Local Portal Portal, https://dev010.symbiota.org/Portal, 2026-06-22).
Collection Statistics
  • 1,047 (80%) georeferenced
  • 1,297 (99%) with media (1,427 total media)
  • 983 (75%) specimen records
  • 161 Families
  • 387 Genera
  • 588 Species
  • 626 total taxa (including subsp. and var.)
Collection Type: Preserved Specimens
Management: Live Data
Global Unique Identifier: 5f474fc1-abcb-42b1-878a-9456904414e6
Digital Metadata: EML File
License:
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