This site is under re-development. This page is now reading from the CCH2 member table. Format and contents of the Member table are incomplete. The format will closely match the old page when finished.
Herbarium Code - Name Description CCH2 Database Contact
BFRS - Blodgett Forest Research StationUC field station herbarium databased, imaged, and managed by UC Berkeley.

For question regarding the specimens, please e-mail:
For questions about the data or images, please contact Jason Alexander.
Jason Alexander
BLMAR - BLM Arcata Field Office HerbariumThe 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.Jennifer Wheeler
BLMRD - BLM Herbarium - Redding FOOur collection represents a portion of the plants in the upper Sacramento Valley and Shasta Cascades region of Northern California. Plants are collected on land managed by the Bureau of Land Management Redding Field Office. Redding BLM herbarium's main focus is vascular plants, however some non-vascular plants have been collected. The Redding BLM office covers many different types of ecosystems that range from ecosystems with serpentine soils to wetlands and vernal pools. Collections range back to the 1960s; about 1,000 collections have been made.
Herbarium contact: Kendra Fallon (
Jason Alexander
BSCA - Colorado Desert District, California Department of Parks and RecreationLarry Hendrickson
CAS - California Academy of SciencesCAS, 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.
CATA - Catalina Island Conservancy HerbariumThe 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.
Ryan Murdoff, Plant Conservation Manager and Curator (
Seth Kauppinen, Botanist and Native Plant Manager, Curator (
Seth Kauppinen
CDA - California Department of Food and AgricultureFounded 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.

G. Fred Hrusa Senior Plant Taxonomist, Emeritus
Deborah J. Meyer, Curator and Senior Seed Botanist

Genevieve Walden
CHSC - CSU Chico, Chico State Herbarium - Vascular PlantsThe Chico State Herbarium is the most complete repository of plant specimens from northeastern California. The emphasis is on the northern California flora, and includes a great number of rare, threatened, and endangered plant species. Established with specimens donated by the late Professor Vesta Holt in the 1950's, the Herbarium now contains more than 125,000 dried and mounted specimens. The majority of samples are flowering plants, conifers, and ferns, but bryophytes, lichens, and especially slime molds, are also well represented. The Herbarium is used extensively for identification of sensitive and other plant species by various agencies and individuals. Loans of herbarium specimens are made to any higher academic institutions who request them.Colleen Hatfield
CLARK - Riverside Metropolitan Museum, Clark HerbariumThe 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. James Bryant, former curator, retired.Douglas Long
CSLA - Cal State LA HerbariumThe CSLA Herbarium holds approximately 35,000 dry-mounted vascular plant specimens from around the world, with particular collection emphasis in Southern California and Northern Mexico. Founded in 1956, CSLA contains significant collections from J. Henrickson, B. Prigge, and R. M. Straw.Kirsten Fisher
CSUSB - California State University San Bernardino
DAV - UC Davis HerbariumUniversity of California, Davis herbarium collections are worldwide, 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.Teri Barry
ELH - BLM, Eagle Lake Field Office HerbariumLockie Valda
FSC - Fresno State HerbariumThe geographical specialty of the FSC is Fresno County and parts of surrounding Inyo, Kern, Madera, Mono, and Tulare Counties: including the Sierra Nevada mountains, the San Joaquin Valley, and the Mojave Desert. About nine-tenths of the accessioned collection, or 31,500 specimens, is from California, with the remaining tenth from other states and countries. We estimate that half of the California collections are from high Sierra Nevada ecosystems (above 7000 feet), as this was Quibell’s focal collecting area. The other half of the collection represents the San Joaquin Valley itself, including riverine ecosystems, vernal pools, and agricultural ecosystems; the western Diablo Range region between Panoche and Coalinga; and the eastern slope of the Sierra Nevada, including the northern extent of the Mojave Desert. There is no particular taxonomic speciality among vascular plants, and only about ~100 of the specimens are federally or state listed as rare, threatened, or endangered (representing 29 taxa). Collectors who frequently contributed to the FSC collection: Charles H. Quibell (founder of the herbarium in 1925 and Fresno State biology professor); John "Jack" Springer, a USFS employee whose private herbarium of 1930s California grass collections was donated to FSC; Rimo C. Bacigalupi, first curator of the Jepson Herbarium, with collections from the 1950s and 1960s; Philip A. Munz from Rancho Santa Ana Botanic Garden and Pomona College, who collected in the 1920s-1950s and provided many of the FSC specimen determinations for specimens collected by Charles H. Quibell; James R. Shevock, associated with California Academy of Sciences and RSA, who worked on the floristics of the Sierra Nevada mountains; John “Jack” Rockwell, who collected in the Fresno area in the mid-20th century and whose specimens are almost entirely confined to FSC; and John H. Weiler, FSC Herbarium curator and Scrophulariaceae specialist.Dr. Katherine Waselkov
GDRC - Green Diamond Resource Co.The California Timberlands Division of Green Diamond Resource Company (GDRC) manages thousands of acres of forest in Northern California in accordance with the Forest Stewardship Council’s Principles & Criteria. The Botany Department is a part of a wider Conservation Planning Department that consists of professionals who conduct both forest and watershed research to help protect California water quality, soils, fish, sensitive plants, and wildlife species. The GDRC herbarium is a collection of vascular plant species collected across the property during floristic surveys, and contains both rare and common species.Gabe Cashman
GMDRC - Sweeney Granite Mountains Desert Research CenterThe University of California’s Sweeney Granite Mountains Desert Research Center Herbarium (GMDRC) houses 14,000 vascular plant specimens, available to researchers and visiting classes at the GMDRC. This regional herbarium holds specimens from the western U.S. with a primary focus on the transmontane bioregions of California, Nevada, Arizona and Utah. Our collection is fully databased (Filemaker Pro) and a digital imaging project is ongoing.Jim André/Tasha La Doux
HNT - Huntington Botanical Gardens HerbariumThe Huntington Botanical Gardens Herbarium (HNT) was founded in the 1960’s by Myron Kimnach, director of the botanical gardens from 1962 to 1986. It is a depository of mostly exotic plant specimens used in research and teaching. The purpose of these specimens is to serve as voucher documentation for research projects, and as resources for plant identification. With over 10,000 specimens, it is an archive of vascular plants from around the world, with particular emphasis on plants from Mexico, Central America and South America. Important collections include those of F. Boutin, J. P. Folsom, D. R. Hodel, D. de Laubenfels, M. Kimnach and R. Moran. Plant families well-represented include Arecaceae, Cactaceae, Crassulaceae, Euphorbiaceae, and desert plants worldwide. In addition, the herbarium receives and provides loans of plant specimens used in active systematic research.

Herbarium contact: Tim Thibault (
Jason Alexander
HREC - Hopland Research and Extension CenterUC field station herbarium databased, imaged, and managed by UC Berkeley.

For question regarding the specimens, please e-mail:
For questions about the data or images, please contact Jason Alexander.
Jason Alexander
HSC - Humboldt State University Vascular Plant HerbariumThe Humboldt State University Vascular Plant Herbarium (HSC) consists of ~104,000 specimens, with a strong emphasis in the flora of northwest California and southwest Oregon. Established in 1960, the Herbarium serves as a botanical resource for students and faculty, as well as, community members and professional botanists. Our collections offer excellent opportunities to learn more about the rich diversity of our native flora, as well as, our exotic and invasive weeds. The Herbarium also participates in loan and exchange programs with other herbaria throughout the country.Robin Bencie
INF - Inyo National Forest Herbarium, Bishop*future contributor
The INF 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.
Michèle Slaton
IRVC - University of California, Irvine HerbariumWestern U.S., especially southern California and Orange County; Baja California, Mexico. Size of collection: 35,000 vascular plant specimens, 5000 lichens, and 280 algae. 86% from California.Rebecca Crowe
JOTR - Joshua Tree National ParkThe 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.Tasha La Doux
JROH - Jasper Ridge Biological Preserve, Stanford UniversityThe 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. Major collectors include John Hunter Thomas (1955-1992), John Rawlings (2004-n) and Toni Corelli (1990-2016). Size of collection: ~5500 specimens.
Nona Chiariello (, Staff Scientist
Ann Lambrecht (
Diane Renshaw (
John Rawlings
KNFY - Klamath National Forest HerbariumThe Klamath National Forest encompasses nearly 1.7 million acres of land straddling the California and Oregon border in the Klamath-Siskiyou Mountain Ranges. In the mountains to the west, the terrain is steep and rugged, while the east-side has gentler, rolling terrain of volcanic origin, sprinkled with buttes and valleys. Elevations range from 450 to 9,001 feet above sea level at Thompson Peak, on the Siskiyou-Trinity County divide. The Klamath National Forest is one of America’s most biologically diverse regions, due to the blending of four floristic provinces and boasts a center of coniferous diversity (19 species) in the Russian Wilderness. The Klamath National Forest Herbarium aims to preserve and record the many rare and endemic species unique to the region.

Herbarium contact: Erin Lonergan (
Jason Alexander
LA - University of California, Los Angeles HerbariumThe UCLA Herbarium (LA) was founded in ca. 1930, and contains approximately 200,000 specimens, almost entirely dried vascular plants. The herbarium contains the collections of notable UCLA biologists such as Carl Epling, Harlan Lewis, Peter Raven, Martin Cody, Henry J. Thompson, Jonathan Sauer, Elizabeth McClintock, and Mildred Mathias. The core of the collection (ca. 146,000 specimens) contains specimens from North America (60%), Europe (23%), the Pacific (7%), South America (5%), Asia (3%), and Africa (2%). The UCLA Herbarium also maintains a large collection of cultivated plants (ca. 11,000), a Santa Monica Mountains Collection (ca. 8,300 specimens), a Baja California Collection (ca. 2400 specimens), and a Type Collection (298 specimens).Thomas Huggins, Collections Manager
LOB - California State University, Long Beach HerbariumThe herbarium has approximately 18,000 specimens preserved as dried, pressed specimens.Amanda Fisher
MACF - MacFadden Herbarium, California State University FullertonMacFadden Herbarium is operated by the Department of Biological Science at Cal State Fullerton and houses over 30, 000 vascular plant specimens. The herbarium is named for botanist Fay A. MacFadden, who sold her extensive collection of plants to the university just prior to her death in 1964. The collection is used as research and teaching tools by our faculty, staff, students, and other researchers.Joshua Der
MCCC - Mendocino College Coast Center HerbariumVascular plants, fungi (lichens and mushrooms), marine algae, mosses, rare plants, vouchers for local consultants and vouchers for Mendocino Flora by Smith and WheelerTeresa Sholars
NCC - Sonoma State University HerbariumRichard Whitkus, Director and Curator
OBI - Robert F. Hoover Herbarium, Cal Poly State UniversityThe Hoover Herbarium houses 85,000+ specimens of vascular plants, algae, lichens, and bryophytes. The geographic focus is San Luis Obispo County, California. The collection also includes many specimens from other areas of California, other states of the US, particularly Arizona, and some from other regions of the world, especially Mexico. Emphasis areas in the collection include Asteraceae, Lupinus, and cultivated Eucalyptus. Major collections include Robert F. Hoover (1946–1969), David J. Keil (1966–present), Rhonda Riggins (1970s–2000), Tracy Call (mostly Apiaceae—late 1940s–1960s), and Robert J. Rodin (1940s–1977). The collection is used extensively in undergraduate teaching and training.

Important Collections: Robert F. Hoover (1946–1969), David J. Keil (1966–present), Rhonda Riggins (1970s–2000), Tracy Call (mostly Apiaceae—late 1940s–1960s), and Robert J. Rodin (1940s–1977)
Jenn Yost, Director and Associate Professor
PASA - Pasadena City College HerbariumThe 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.

Herbarium contact: Sean Lahmeyer (
Jason Alexander
PGM - Pacific Grove Museum of Natural HistoryThe 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.

Herbarium contact: Paul Vandecarr (
Jason Alexander
PPWD - Stephen J. Barnhart Herbarium at Pepperwood PreserveThe Stephen J. Barnhart Herbarium at Pepperwood houses specimens of fungi, lichen, and non-vascular and vascular plants collected at Pepperwood Preserve, Sonoma County, California. It includes plants collected by Greg deNevers who worked as the resident biologist for the California Academy of Sciences during the 1980s. The Barnhart Herbarium is under the supervision of the Preserve Ecologist and is primarily staffed by volunteers and community scientists, who are involved in the collection of plant specimens and the curation and maintenance of the Herbarium.Michelle Halbur
PUA - Pacific Union College Hebarium*future contributor
Specialty: Vascular plants of coastal regions from San Francisco Bay to southern Oregon; Napa County, California; Klamath Mountains; Arizona; Nevada.
Date Founded: 1967.
Aimee Wyrick, Director and Curator
RSA - California Botanic Garden HerbariumThe 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.Mare Nazaire, Administrative Curator
SACT - California State University, SacramentoThe CSU Sacramento herbarium contains vascular plants mostly from California with an emphasis on Placer County flora. Size of collection: ~20,000 specimens.

Herbarium contact: Shannon Datwyler (
Data Manager: Travis Lawrence (
Jason Alexander
SBBG - Clifton Smith Herbarium, Santa Barbara Botanic GardenThe SBBG herbaria house the region's largest scientific collection of preserved Central Coast and California Channel Islands vascular plants, bryophytes, lichens, and macrofungi. Across these collections, the Garden curates approximately 190,000 specimens. Vascular plant specimen data are served on this portal ( Lichen specimen data are served on the Consortium of North American Lichen Herbaria ( Macrofungus specimen data are served on the Mycology Collections Portal ( Bryophyte data are not yet served digitally.C. Matt Guilliams
SCFS - Sagehen HerbariumThe Sagehen Herbarium is comprised of two related collections: Flora of the Sagehen Basin (approx. 1600 specimens) and Flora of the North Fork of the American River Headwaters (approx. 200 specimens). Both are designed to be synoptic teaching collections for their respective regions. Sagehen Basin is approximately 9000-acres, encompassing a diverse cross section of the Sierra Nevada from near the Pacific Crest (el. 8500 ft) to the eastern slope approaching the Great Basin (el. 6000 ft). Habitats include yellow pine, mixed conifer, and red fir forests, as well as brushfields, scattered mountain meadows, aspen groves, willow thickets, and fens.  Sagehen's collection began in 1963. Important collectors and determiners include B. Trowbridge, G. H. True, Jr., W. Savage, E. Krimmel and F. Felix.  The 20,000-acre North Fork American River headwaters on the west slope of the Sierra Nevada is comprised of Chickering American River Reserve, North Fork Association Lands, Onion Creek Experimental Forest, other US Forest Service land, and a few other small private in-holdings. It includes habitats such as black oak woodlands, montane and subalpine coniferous forests, aspen groves, willow thickets, mixed riparian woodland, wet and dry subalpine meadows, montane chaparral, alpine lake margins, and fell fields. Major collectors are R. Palmer, B. Corbin, S. Chickering, E. Krimmel, and F. Felix. Flora of the North Fork American River collection began in Summer 2013, with the goal of establishing voucher specimens to document this reserve's plant list. Both the Sagehen Creek and North Fork American River collections are actively being added to at a rate of 50-300 per field season. E. Krimmel updated the collection taxonomy in May, 2011. With the release of TJM2, A. Gallandt (2018) and F. Felix (2020) updated the collection again. Collection imaged by E. Krimmel and F. Felix at Cal Poly's Hoover Herbarium (2019-2020). Georeferenced by F. Felix (2016, 2020). Info: Felix
SD - SD Herbarium, San Diego Natural History MuseumThe San Diego Natural History Museum Department of Botany focuses on biodiversity, evolutionary history research, and documentation of the flora in Southern California, Baja California, and adjacent areas. With a collection dating back to the 1870s, the SD Herbarium is invaluable as a scientific resource that documents regional plant populations and has been used for basic natural history research. Botanists with regional colleges, universities, and museums utilize the collections for their own research and for student projects, both by visiting the collection in person and/or through loans. The SD Herbarium houses over 270,000 accessioned specimens, all of which have been databased. Specimens from southern California account for nearly half of our collection and about 20% of our collection is from Baja California. Nearly all San Diego County and Baja California records have been georeferenced (99%). The Botany Department maintains two web sites that serve researchers with searching and mapping pages, checklists, voucher images, data input forms for collectors, and other tools for using our collections. serves researchers interested in the plants of California’s San Diego and Imperial Counties. serves the needs of researchers interested in the plants of the two states of Baja, Mexico, consolidating the SD collections and the collections of the two primary herbaria in Baja.Layla Aerne Hains
SDSU - San Diego State University HerbariumThe 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 Australia, Chile, and the south Pacific.Michael Simpson, Curator
SFSU - Vascular Plants of the Harry D. Thiers Herbarium at San Francisco State UniversityThe Harry D. Thiers Herbarium at San Francisco State University maintains over 113,000 specimens. Its primary research focus is mycological, but there are roughly 10,000 vascular plant specimens. Most vascular plant specimens were collected from approximately the 1990s to 2010s by Bob Patterson, V. Thomas Parker, and their students. Special vascular plant collections of SFSU include the California Polemoniaceae, an robust collection of most Arctostaphylos (Ericaceae) taxa, and a current collection focus on taxonomically diverse genera of the California Floristic Province such as Ceanothus (Rhamnaceae) and Eriogonum (Polygonaceae). The vascular plant collection is curated by Jason T. Cantley.Jason T. Cantley
SFV - California State University, NorthridgePrimarily vascular plants of California but with holdings in other parts of North America and some other places worldwide. Vascular plant specimens are on herbarium sheets, bryophytes and lichens are in paper packets. We have nearly 25,000 specimens.James N. Hogue
SHTC - CSU Stanislaus Herbarium
SJSU - Carl W. Sharsmith Herbarium, San Jose State UniversityFounded in 1945 by Dr. Carl Sharsmith, the herbarium at San Jose State University houses a collection of more than 18,500 dried plant specimens. Many specimens were collected over Dr. Sharsmith's long career as a university professor and natural history ranger at Yosemite National Park. The collection is actively curated with approximately 500 new specimens being added every year.Lars Rosengreen, Curator
SPIF - Sierra Pacific Industries-ForestryThe Forestry Division of Sierra Pacific Industries manages ±1.7 million acres in northern California. The majority of the collection results from rare plant surveys within forestland and associated habitats, accompanied by various plot based studies, and includes both rare and common species. Our targeted list of endangered/threatened/rare plants comprises ±400 species. In addition to protecting rare plants as part of a long-term management strategy, we also conduct forest and watershed research.Len Lindstrand III
THRI - Herbarium of Sequoia and Kings Canyon National ParksWard Eldredge
UCJEPS - University and Jepson Herbaria, University of California, BerkeleyEstablished in 1895 around a core of preserved plant specimens that were collected by William Brewer on the California Geological Survey of 1860 to 1864, the University Herbarium (UC) includes 2,200,000 specimens from land plants, algae, lichens, and fungi.

Established in 1950 by a bequest from Willis Linn Jepson, the Jepson Herbarium (JEPS) includes over 100,000 vascular plant specimens from California.

Jason Alexander
UCR - University of California, Riverside Herbarium - Vascular PlantsAndrew Sanders
UCSB - University of California Santa Barbara HerbariumThe University of California, Santa Barbara (UCSB) Herbarium has approximately 120,000 herbarium specimens of vascular plants, lichens, bryophytes, and marine macroalgae. The herbarium is housed at the Cheadle Center for Biodiversity and Ecological Restoration on the campus of UCSB. The vascular plant collection consist mainly of specimens from Santa Barbara County, including the northern Channel Islands, with additional collections from San Luis Obispo, Kern, and Ventura Counties, the southern Sierra Nevada region, southern California, and northern Mexico. Special collections include the J. R. Haller pine collection (5,000 specimens), with emphasis on population-level sampling of many western North American pine species, and the Cornelius H. Muller oak collection, with ca. 7,000 specimens from the USA and Mexico. Also conserved in the herbarium are ca. 69,000 slide preparations and spirit collections of Vernon I. Cheadle and Katherine Esau. There are 43 type specimens of plants and marine macroalgae. Incorporated collections include the Santa Rosa Island Reserve (SCIR) herbarium (1,500) and the marine macroalgae of the Santa Barbara Museum of Natural History (1,035), which contains some of the earliest collections of California seaweeds. Greg Wahlert is the current collections manager. Taxonomy and nomenclature follow the second edition of the Jepson Manual (Baldwin et al., 2012). Financial assistance with digitization efforts is provided in part by the UCSB Coastal Fund.Greg Wahlert
UCSC - Kenneth S. Norris Center for Natural History, University of California Santa Cruz, HerbariumThe Herbarium at the Kenneth S. Norris Center for Natural History (UC Santa Cruz) houses more than 13,500 vascular plants, algae, lichens, and bryophytes. The collection focuses primarily on Santa Cruz County and the University of California Reserves but also contains important specimens from throughout California. The collection archives research and publication voucher specimens and is also a student education resource. Notable collections include those of R. Morgan (1969-2017), Dylan Neubauer, David Styer (Fort Ord National Monument collections), Neal Kramer (Bonny Doon Ecological Reserve collections), and the Bureau of Land Management (Cotoni-Coast Dairies National Monument collections).Chris Lay (Administrative Director); Al Keuter (Vascular Plants Curator)
UNLV - University of Nevada, Las Vegas; Wesley E. Niles HerbariumFounded in 1970 by Dr. Wesley E. Niles, the herbarium now holds about 70,000 specimens. Its primary focus is the vascular plant diversity in the Mojave Desert regions of Nevada, Utah, Arizona, and California. Important collections include those of T. Ackerman (Desert National Wildlife Refuge); J. C. Beatley (Nevada Test Site); V. Bostick (central and southern Nevada); D. Charlet (Nevada); I.W. Clokey (Spring Mountains); M.Kurzius, D. Schramm, P. Peterson, and C. Annabel (Death Valley, California, and Nevada); S. Meyer (southern Nevada); A. Tiehm, A. Pinzl, and H. Mozingo (central and northern Nevada); W. Niles, P. Leary, J. Holland, and J. Alexander (Nevada, California, and Arizona), and L. Stark (bryophytes of southwestern deserts).Llo Stark
VVC - Victor Valley CollegeA. Louise Baartz Memorial Herbarium. 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.

Herbarium contact: Tim Thomas (
Jason Alexander
YM - Yosemite National ParkYosemite National Park Herbarium 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.

Herbarium contact: Sara Hay (
Jason Alexander
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