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| Kraemer Herbarium | |
|---|---|
| Name | Kraemer Herbarium |
| Established | 1950s |
| Location | Placer County, California |
| Institution | California State University, Chico |
| Director | Patricia A. Kraemer (founder) |
| Collection size | ~100,000 specimens |
Kraemer Herbarium is a university herbarium associated with California State University, Chico, that documents vascular plants, bryophytes, and fungi of California and western North America. The herbarium supports research, teaching, and conservation through specimen curation, digitization, and loans to regional and international institutions. It serves as a reference for floristics, biogeography, and environmental assessment for public agencies and non‑profits.
The herbarium traces origins to the mid‑20th century when faculty such as Olga Lakela and Ralph Hoffmann contributed regional floristic collections and when founder Patricia A. Kraemer consolidated campus holdings into a centralized repository. Growth accelerated through donations from collectors including Charles S. Sargent, R. Dale Thomas, Lyman Benson, Alice Eastwood, and J. T. Howell, and through exchanges with institutions like University of California, Berkeley Herbarium, Jepson Herbarium, California Academy of Sciences, Harvard University Herbaria, and Smithsonian Institution. The herbarium expanded during collaborations with agencies such as United States Forest Service, California Department of Fish and Wildlife, National Park Service, and Bureau of Land Management. Major institutional milestones involved digitization initiatives influenced by projects at Consortium of California Herbaria, Global Biodiversity Information Facility, and Integrated Digitized Biocollections. Administrative stewardship involved partnerships with administrators from California State University system and curators trained with ties to Missouri Botanical Garden and New York Botanical Garden.
Collections emphasize vascular plants of the western United States, with significant holdings of specimens from California, Oregon, Nevada, Arizona, Washington (state), and British Columbia. The herbarium houses bryophyte collections linked to collectors associated with University of British Columbia, Duke University, and University of Michigan. Holdings include type specimens and historically important sheets from collectors such as John Muir, E. L. Greene, Sereno Watson, and William Lobb. Fungal and lichen holdings contain vouchers connected to researchers at Colorado State University, University of Minnesota, and University of California, Riverside. The specimen database interoperates with aggregators like iDigBio, VertNet, and Biodiversity Heritage Library, and metadata standards reflect schemas used by Darwin Core adopters and regional consortia such as California Native Plant Society.
Specimens are housed in climate‑controlled cabinets similar to those at Royal Botanic Gardens, Kew and follow curation protocols influenced by manuals from Smithsonian Institution and Royal Botanic Garden Edinburgh. Mounting practices incorporate archival paper and adhesives conforming to guidelines from American Institute for Conservation and cross‑referenced with barcoding systems used at Yale University Herbarium and University and Jepson Herbaria. Pest mitigation aligns with integrated pest management strategies advocated by United States Department of Agriculture. Digitization workflows employ imaging standards compatible with MorphoSource and data pipelines resembling those developed at New York Botanical Garden and Missouri Botanical Garden.
Faculty and students associated with the herbarium publish floristic treatments, monographs, and taxonomic revisions in venues such as Madroño (journal), American Journal of Botany, Systematic Botany, Taxon (journal), and Phytoneuron. Research themes include California endemism, invasive species studies in collaboration with California Invasive Plant Council, phylogeography linked with labs at University of California, Davis, population genetics with groups at Stanford University, and conservation assessments coordinated with NatureServe and IUCN. Graduate theses and undergraduate honors projects have resulted in contributions to regional checklists and manuals such as the Flora of North America and regional keys used by California Botanical Society.
The herbarium supports coursework in botany, ecology, and environmental science through partnerships with departments at California State University, Chico, field courses with Sierra Club and The Nature Conservancy, and community programs with Plumas National Forest and local school districts. Public workshops on plant identification and preservation are offered in cooperation with California Native Plant Society chapters and volunteer programs similar to those run by Friends of the Botanical Garden at institutions like San Diego Botanic Garden. Outreach includes participation in regional biodiversity festivals organized by Biological Sciences Museum partners and collaborative exhibits with Chico Municipal Museum.
Noteworthy holdings include historical collections by John Xantus de Vesey and early California botanists such as Thomas Nuttall and G. S. G. Allen, as well as settlement‑era specimens relevant to restoration projects in Sierra Nevada and Sacramento Valley. The herbarium houses specimens that have informed listing decisions by California Fish and Game Commission and provided vouchers for environmental impact assessments for projects reviewed by California Environmental Quality Act processes. Key collections represent plant communities of Chaparral, Oak Woodland, and Riparian habitats and include rare vouchers connected to conservation partners like Center for Plant Conservation.
The herbarium maintains reciprocal exchange and loan agreements with regional and international institutions including Jepson Herbarium, University of California, Santa Barbara Herbarium, California Polytechnic State University, San Diego Natural History Museum, Royal Botanic Gardens, Kew, Australian National Herbarium, and Field Museum of Natural History. It collaborates on digitization grants administered by National Science Foundation, participates in data sharing with Global Biodiversity Information Facility, and contributes to conservation planning with U.S. Fish and Wildlife Service and non‑profits such as The Nature Conservancy. Student internships and research exchanges operate in coordination with universities like University of California, Berkeley, Oregon State University, and University of Washington.
Category:Herbaria in the United States Category:California State University, Chico