Bureau of Land Management, Arcata Field Office BLMAR. The small herbarium contains approximately 700 vascular plant specimens and over 300 bryophyte and lichen specimens dating from the early 1990s. The collection covers all the lands managed by the Bureau of Land Management Arcata Field Office in California, as well as other nearby public lands. Nearly all of the specimens were collected in Humboldt, Mendocino, or Trinity Counties. The collection includes some endangered and listed species as well as some potential range extensions and other species of interest. Contact: Jennifer Wheeler (jswheele@blm.gov)
California Academy of Sciences CAS, DS. Worldwide, nearly 1.9 million specimens (27% from California); more than 95% vascular seed plants; the remainder are ferns and a growing collection of bryophytes. Emphasis is on California, North America, Latin America (especially western and southern Mexico and the Galapagos) and Asia (especially China). Vascular plant families and genera that are particularly well represented include Acanthaceae, Brassicaceae, Carex, Eriogonum, Hydrophyllaceae, Lupinus, Asteraceae (particularly Madinae), Malvaceae, Melastomataceae, Onagraceae, Penstemon, Poaceae, Polemoniaceae and Quercus. The herbarium also contains the largest collection of ornamental plants in California. Contact: Debra Trock (dtrock@calacademy.org)
Catalina Island Conservancy CATA. The Catalina Island Conservancy Herbarium houses about 2,000 vascular plant specimens. All specimens were collected on Santa Catalina Island. 73% of the specimens were collected in the 1970's and 1990's by Mark L. Hoefs. Contact: Amy Catalano (acatalano@catalinaconservancy.org)
California Department of Food and Agriculture CDA. Founded in 1921, the Botany Lab and Herbarium of the California Department of Food and Agriculture (Plant Pest Diagnostics Center) serves as the plant diagnostic and identification service for California, and is the repository for the state collection of noxious weed and agricultural plant specimens. Size of collection: 55,000 plant specimens. Notable collections include those of M. K. Bellue, T. C. Fuller, G. Douglas Barbe, G. F. Hrusa, D. G. Kelch, and G. L. Stout (plant disease collection, BPS). The CDFA Seed Herbarium has ca. 50,000 accessions in the Seed and Fruit Collection (CDA SFC). Notable collections include those of M. K. Bellue, B. Crampton, P. B. Kennedy, D. Baxter, B. M. Browning, D. Decker-Walters, and C. Dremann. Contact information:
Genevieve Walden, Curator and Senior Plant Taxonomist (genevieve.walden@cdfa.ca.gov)
G. Fred Hrusa Senior Plant Taxonomist, Emeritus (fred.hrusa@cdfa.ca.gov)
Deborah J. Meyer, Curator and Senior Seed Botanist (deborah.meyer@cdfa.ca.gov)
Robert F. Hoover Herbarium, California Polytechnic State University, San Luis Obispo OBI. The Hoover Herbarium, houses about 75,000 mounted plant specimens. Vascular plants comprise most of the holdings with smaller collections of algae and lichens. The herbarium is especially rich in Asteraceae. Approximately 80 percent of the specimens are from California, particularly central coastal counties. Most of the out-of-state collections are from the southwestern US and Mexico. Notable collections include those of Robert F. Hoover, David J. Keil, D. R. Miller, Rhonda Riggins (Lupinus), Matt Ritter (Eucalyptus), Shirley Sparling (algae), and Eric A. Wise (aquatics). Robert F. Hoover's collections were the basis for The Vascular Plants of San Luis Obispo County, California (1970). Contact: Jenn Yost, (jyost@calpoly.edu)
California State University, Chico CHSC. Chico State Herbarium at California State University, Chico is the most complete repository of plant specimens from northeastern California. The emphasis is on the local flora, and includes a number of rare, threatened, and endangered plant species. Size of collection: 95,300, 77% from California. Director: Colleen Hatfield (chatfield@csuchico.edu)
Curator and data contact: Lawrence Janeway (LJaneway@csuchico.edu)
California State University, Fresno FSC. Fresno State Herbarium at California State University, Fresno contains ~35,000 accessioned specimens dating back to the 1920s, ~90% from California. The geographical specialty is Fresno County and parts of surrounding Inyo, Kern, Madera, Mono, and Tulare Counties; about half of these collections are from high Sierra Nevada ecosystems, and up to a quarter represent San Joaquin Valley floor ecosystems. Taxonomically, FSC is composed almost entirely of vascular plants, with small lichen and algal collections.

*future contributor
Katherine Waselkov (kwaselkov at csufresno.edu)
John Constable (jconstable at csufresno.edu)
California State University, Fullerton MACF. The herbarium, located in the Department of Biological Science at California State University Fullerton, is named for Fay A. MacFadden, who sold her extensive collection of plants to the university just prior to her death in 1964. The collection encompasses specimens collected from the 1800s through today and includes approximately 25,000 vascular plant, 12,000 bryophyte, and 800 lichen specimens, as well as special seed, pollen, and cacti collections. The herbarium has been under restoration since 2012 and is currently in the process of being updated and databased. Curator: Jochen Schenk (jschenk at fullerton.edu)
Data contact: Sarah Taylor (sataylor at exchange.fullerton.edu)
California State University, Northridge SFV. Founded in 1958. 23,000 specimens (13,000 databased) of vascular plants, bryophytes, and a small number of lichens. Primary representation is from California (particularly southern California) but with specimens from other parts of North America and the world. Contact: James N. Hogue, Collections Manager. james.n.hogue at csun.edu
California State University, Sacramento SACT. California State University, Sacramento herbarium contains vascular plants mostly from California with an emphasis on Placer County flora. Size of collection: ~20,000 specimens. Contact information:
Shannon Datwyler (datwyler at csus.edu), Collection Manager
Travis Lawrence (tl584 at saclink.csus.edu), Data Manager
California State University, San Bernardino CSUSB. California, with special attention to San Bernardino, Riverside, Orange, and San Diego counties. Size of collection: 4,800 specimens. Contact: Kimberlyn Williams (williams at csusb.edu)
Sweeney Granite Mountains Desert Research Center GMDRC. The Sweeney Granite Mountains Desert Research Center Herbarium houses 10,000 vascular plant specimens, available to visiting researchers and classes at the GMDRC. This facility is part of the University of California's Natural Reserve System, which serves the mission of promoting a better understanding and wise management of arid lands, especially the California deserts. This regional herbarium holds specimens from the eastern Sierra Nevada, Mojave, Great Basin, and Sonoran Desert bioregions, with the primary focus being the eastern Mojave Desert of California. Our collection is completely databased (Filemaker Pro). Director: Jim André (granites at telis.org)
Assistant Director: Tasha La Doux (tashal at ucr.edu)
Humboldt State University

HSC. Vascular plants from California, especially northwestern California. In addition, a large collection from southwestern Oregon and grasses from North America. Size of collection: 100,000 specimens, 80% California.

Director: Michael Mesler (mrm1 at humboldt.edu)
Collection manager and data contact: Robin Bencie (mrb1 at humboldt.edu)
Inyo National Forest Herbarium, Bishop INF This small herbarium houses approximately 4000 vascular plant specimens, primarily from eastern California over the last century, plus over 100 bryophyte specimens. The location is shared with an additional herbarium collection belonging to the Bureau of Land Management Bishop Field Office. The collection also includes Mary DeDecker’s original field notes and personal botanical library. Contact information:
Michèle Slaton (mslaton02 at fs.fed.us)
Jasper Ridge Biological Preserve, Stanford University JROH. The Oakmead Herbarium at Jasper Ridge Biological Preserve was founded in 1996. All specimens were collected from the 1198 acres (485 ha) now comprising the Jasper Ridge Biological Preserve of Stanford University, San Mateo County, California. Size of collection: ~5500 specimens. Staff Scientist: Nona Chiariello (nonajrbp at stanford.edu)
Data Contacts: Ann Lambrecht (alambrec at stanford.edu)
Toni Corelli (corelli at coastside.net)
John Rawlings (rawlings at stanford.edu)
Diane Renshaw (dlr at ecosystem.com)
Joshua Tree National Park JOTR. The JOTR herbarium contains vascular plant, lichen, and bryophyte specimens from the area within the National Park boundary. The focus of this herbarium is to provide a synoptic collection representing a minimum of 90% of species known to occur in the Park. The collection is mainly used for resource management and educational purposes, however, researchers are encouraged to utilize the specimens as well. Contact information:
Tasha La Doux (ladouxtash at earthlink.net)
Pasadena City College Herbarium PASA. The Pasadena City College Herbarium, is a small collection (ca. 2,400 sheets) of vascular plants from S. California. Many of the specimens were collected during the 1920's and 1930's. Notable collectors include early collections from Annetta Carter. The collection was formally given to HNT in 2008. Contact: Sean Lahmeyer (slahmeyer at huntington.org
Pacific Grove Museum of Natural History PGM. The herbarium of the Pacific Grove Museum of Natural History contains approximately 7,500 specimens which are concerned principally with the vascular plants of Monterey County, California and the adjacent inner coast range mountains which border it, including collections from San Benito, western Fresno, and portions of Kings County. Ninety percent of the collections are from Monterey County, California. The herbarium includes the Monterey County collections of Beatrice F. Howitt, duplicates of specimens sent to CAS and identified by J.T. Howell resulting in: The Vascular Plants of Monterey County, California by Beatrice F. Howeitt and John Thomas Howell, The Wasmann Journal of Biology, Vol. 22, No. 1, Spring 1964 and Supplement published by The Pacific Grove Museum of Natural History Assoc, July, 1973. Contact: Paul Vandecarr (Vandecarr at pgmuseum.org)
Rancho Santa Ana Botanic Garden and Pomona College combined herbaria RSA, POM. Mainly vascular plants with worldwide scope, emphasis on arid regions, especially southern California and Baja California. Size of combined collections: 1,184,000 specimens, 39% from California. Director of Research: Lucinda McDade (Lucinda.McDade at cgu.edu)
Curatorial Assistant II: Joy England (jengland at rsabg.org)
Herbarium Workroom Manager: Rachel Poutasse (rpoutasse at rsabg.org)
Conservation Botanist: Naomi Fraga (nfraga at rsabg.org)
Collections Manager: Mare Nazaire (mnazaire at rsabg.org)
Clark Herbarium, Riverside Metropolitan Museum CLARK. The Clark Herbarium (founded in 1949) serves as a reference library to the plant diversity and changes of Southern California. With almost 10,000 specimens, the Clark Herbarium includes dry botanical mounts, most of which were collected from the Riverside region and surrounding counties by J. C. Roos and other botanists between 1920 and 1990. A small collection of lichens and fungi was assembled during the 1930s by Edmund C. Jaeger, and was later donated to the Museum during his tenure as Curator of Plants. All these materials now represent an important database describing the distribution of native plant species in the southwestern U.S., which is now a vastly altered environmental setting. Data Contact: James Bryant (JBRYANT at riversideca.gov)
Sagehen Creek Field Station, University of California, Berkeley SCFS. The herbarium is comprised of two related collections: "Herbarium of the Sagehen Creek Field Station" and "Flora of California." The Sagehen Creek collection includes just over 1,000 specimens and is fairly comprehensive of plants found on the reserve, which is approximately 8000 acres and encompasses a diverse cross section of the Sierra Nevada from the Pacific Crest (el. 8000 ft) to the eastern slope (el. 6400 ft). Habitats include yellow pine, mixed conifer, and red fir forests, as well as brushfields, scattered mountain meadows, and fens. The "Flora of California" collection has approximately 2,000 specimens and draws from a broader area, but is still focused on Sierra Nevada species. Director: Jeff Brown (sagehen at berkeley.edu)
Data Contact: Faerthen Felix (ffelix at berkeley.edu)
Data Contact: Erica Krimmel (ekrimmel at gmail.com)
San Diego Natural History Museum SD. The herbarium holds over 200,000 specimens dating from the 1870s, primarily vascular plants, but including ~5000 marine algae. We are working on building our collection of local nonvascular plants, particularly lichens. Emphasis is on plants of the southwestern United States and northern Mexico, particularly southern California and the Baja California peninsula and its adjacent islands. Taxonomic specialties are Cactaceae and Crassulaceae. 50% of specimens are from California. Curator: Jon Rebman (jrebman at sdnhm.org)
Collections Managers and data contacts: Judy Gibson (jgibson at sdnhm.org) and Layla Aerne Hains (laerne at sdnhm.org)
Types database
San Diego Plant Atlas
San Diego State University SDSU. The SDSU herbarium houses over 19,000 specimens of vascular plants, used for teaching and research. The bulk (89%) of our collection is from California, 60% of these from San Diego County. Additional collections are primarily from the southwestern U.S., Baja California peninsula, Australia, Chile, and the south Pacific. Curator: Michael G. Simpson (msimpson at mail.sdsu.edu)
Herbarium web site: www.sci.sdsu.edu/herb

Plant Systematics Resources: www.sci.sdsu.edu/plants/plantsystematics

Plant Systematics at SDSU: www.sci.sdsu.edu/plants/lab
Carl W. Sharsmith Herbarium, San Jose State University SJSU. Worldwide, with emphasis on California. Some fungi and lichens. Size of collection: 14,691 vascular plant specimens, each prepared by Carl W. Sharsmith, 69% from California. Director (benjamin.carter at sjsu.edu)
Curator and Data contact: Teri Barry (teribarry2003 at yahoo.com)
Curator and Data contact: Lars Rosengreen (lars.rosengreen at sjsu.edu)
Santa Barbara Botanic Garden SBBG. Vascular plants, lichens, and mosses of California; emphasis on central coast region of California and the Channel Islands. Size of collection: 150,000 specimens, 80% from California. Curator and Tucker Plant Systematist: C. Matt Guilliams (mguilliams at sbbg.org)
Curator Emeritus: Dieter Wilken (dwilken at sbbg.org)
University of California, Berkeley JEPS (Jepson Herbarium: Vascular plants of California), UC (University Herbarium: Plants from around the world), BFRS (Blodgett Forest Research Station), and HREC (Hopland Research & Extension Center). Size of combined collections: 2,200,000 specimens, 16% from California (databased). Collections Contact: Andrew Doran (andrewdoran@berkeley.edu)
Data Contact: Jason Alexander (jason_alexander@berkeley.edu)
University of California, Davis UCD (consisting of DAV, AHUC). Worldwide collection, with emphasis on California, North America, and neotropics (especially Ecuador and Baja California); Quercus, Fagaceae, and Arctostaphylos, Ericaceae of New World; Euphorbiaceae; Poaceae; Clarkia (Onagraceae); Lycianthes and Lycopersicon (Solanaceae); Stephanomeria and tarweed genera (Asteraceae); Navarretia (Polemoniaceae); Allium (Alliaceae); Trifolium (Fabaceae); Prunus (Rosaceae); Central Valley of California vernal pool species; weedy and poisonous species of California and Mediterranean-climate regions; range plants of California; alpine flora of western North America. Size of collection: 320,000 specimens, 50% from California. Director: Ellen Dean (eadean at ucdavis.edu)
Data contact: Tom Starbuck (tjstarbuck at ucdavis.edu)
University of California, Irvine IRVC. Western U.S., especially southern California and Orange County; Baja California, Mexico. Size of collection: 35,000 vascular plant specimens, 5000 lichens and algae. 86% from California. Director: Peter Bowler (pabowler at uci.edu)
University of California, Los Angeles LA. Worldwide collection of ca. 190,000 specimens of vascular plants, 25% from California (primarily southern California); 3% cultivated. Significant collections include: Apiaceae (Cymopterus, Lomatium), Lamiaceae (Monardella, Salvia, Trichostoma), Loasaceae (Mentzelia), Onagraceae (Camissonia, Clarkia, Epilobium), Ranunculaceae (Delphinium), and Primulaceae (Dodecatheon). Director: Philip Rundel
Contact: Tom Huggins (huggins at ucla.edu)
University of California, Riverside UCR. About 280,000 specimens total (270,105 databased): 253,184 vascular plants (both wild and cultivated) from the Americas, especially the southwestern U.S. and Mexico, including 173,339 from California (5463 of those cultivated); c. 16,921 lichens & allied fungi, world-wide but especially southern California; about 10,000 other fungi. Except for the general fungi and some mosses, the entire collection has been databased. All of the UCR native/naturalized CA vascular plant records are displayed in CCH. We have completed the georeferencing of our California collections, including 5050 from the state of Baja California, Mexico: 100% of our records from the CA Floristic Province are now in CCH. Records from outside CA can be accessed at www.herbarium.ucr.edu, as can more detailed information related to the records displayed by CCH. Director: Giles Waines (waines@citrus.ucr.edu)
Data contact: Andrew Sanders (andrew.sanders@ucr.edu)
University of California, Santa Barbara UCSB. Mainly vascular plants of western North America, especially California; some worldwide. Size of collection: 100,000 specimens, 65% from California. Contact: Jennifer Thorsch (thorsch at lifesci.ucsb.edu
University of California, Santa Cruz UCSC. California, with special attention to the Santa Cruz Mountains; vascular plants; lichen; fungi. Size of collection: 10,000 specimens, 88% from California Contact: Chris Lay (cml at ucsc.edu)
A. Louise Baartz Memorial Herbarium, Victor Valley College VVC. A. Louise Baartz was a former biology professor at Victor Valley College who began an herbarium collection under the supervision of Dr. Wilbur Mayhew of the University of California at Riverside. In 1973 she registered the Victor Valley College herbarium collection, then with only around 300 specimens, with the California Department of Agriculture. The collection now contains 5,000+ (2,000+ accessioned and georeferenced) specimens from the Mojave Desert, San Bernardino Mountains, the southeastern Sierra Nevada, southern San Joaquin Valley, and southeastern Arizona. Contact Information:
Tim Thomas (timthom at verizon.net); Pam MacKay (mackayp at vvc.edu)
Yosemite National Park Herbarium YM. YM is a significant regional collection, with 8,000 specimens, dating from the early part of the 20th century to the present with the bulk of specimens dating from the 1920s to the 1960s. This is an actively growing herbarium, with over 3,000 vascular plant specimens added in the last ten years. The herbarium is a valuable component of the park's museum collections and is an essential tool for resource management: fire management, exotics programs, and vegetation management. It is also a valuable source of information to the scientific community about Yosemite's complex flora. Access to the collections is granted to researchers by advance appointment. Contact: Sara Hay (sara_hay at nps.gov)
 Extra-California institutions
Harvard University Herbaria Consisting of A (Herbarium of the Arnold Arboretum), AMES (Oakes Ames Orchid Herbarium), GH (Gray Herbarium), & ECON (Economic Herbarium of Oakes Ames). 4000+ California type specimens and many historically important records. Director: Charles Davis (cdavis at oeb.harvard.edu)
Data Contact: Paul Morris (mole at morris.net)
Harvard University Herbaria
New York Botanical Garden NY. 15,000 California specimens New York Botanical Garden
Southwest Environmental Information Network SEINet. Specimens from UTC, ARIZ, DES, NMC, ASC, SJNM, UNM, CS, ASU, BRY, FLD, KHD, RM, UVSC, MNA, CCH, USON, WSC, FLFO, EPHR, RMBL, PRI, and TEUI Herbaria. 25,000 California specimens not otherwise represented in the consortium SEINet
Contact: Edward Gilbert (egbiodiversity at gmail.com)
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