Jepson Herbarium Public Programs


Bruce Baldwin identifying a plant Class at a vernal pool Class in the White Mountains Margriet Wetherwax examining a plant

In 1994, the Friends of the Jepson Herbarium began a program to provide educational opportunities for a broad audience of professional and amateur botanists. Today, the program continues to serve as a liaison between the scientific community and the public, a role we are dedicated to as we enter our 27th year of public programs. For 2020, the Jepson Workshop Series is proud to offer workshops in botany, plant taxonomy, regional floras, ecology, and more. Join us for another great year of learning about the flora of California!


2020 Jepson Workshop Series

Workshop fees are listed as: members of the Friends of the Jepson Herbarium/General Public.

Hosted On-line



Spatial phylogenetics: A "big data" approach integrating ecology, evolution, and conservation

October 17, 2020
Brent Mishler
UC Berkeley

Biodiversity has usually been measured by examining changes in the number of species across a region to identify areas of particularly high species diversity and endemism. Beta-diversity, or turn-over on the landscape, is likewise typically measured by comparing proportions of species shared among subareas. However, investigations based on species distributions alone miss the full richness of understanding that can result from taking a phylogenetic approach. Fortunately, advances in digitization of natural history collections, broad-scale DNA sequencing of many taxa represented in pubic databases, and scaling-up of methods for building phylogenies have made it possible to apply a phylogenetic approach to assessment of biodiversity and endemism that can be termed "spatial phylogenetics." New methods such as Categorical Analysis of Neo- And Paleo-Endemism (CANAPE) and phylogenetic range-weighted turnover (PhyloRWT) can identify hotspots of diversity and endemism, assess their make-up, and characterize similarities and differences among them. Using hypotheses tests based on a spatial randomization, insights can be gained into ecological, evolutionary, and biogeographic processes that have shaped these patterns. These new phylogenetic methods are also useful in conservation assessments by identifying complementary areas of biodiversity that have unique evolutionary histories.

This workshop will be a combination of lecture, classroom activities, and discussion and will cover the basic principles of the methods described above. Examples will be given from the several floras from around the world including Australia, Chile, Norway, and Florida. The cost of this workshop also includes an evening event and reception where the instructor will give a presentation focused on recently published applications of these methods to the California flora.

Start/End: Saturday, 1:00 pm –  5:00 pm.

Course Fee: $75

This workshop has been approved for 2 Professional Development Credits by the California Consulting Botanist Board of Certification

If you are interested in this workshop, please fill out this Google form.



Past or cancelled workshops



Introduction to Lichen Identification and Ecology

February 8 – 9, 2020
Jesse Miller and Allie Weill
UC Berkeley and Marin Municipal Water District Field Site

Lichens are all around us and they have fascinating stories to tell. This two-day workshop will focus on developing skills for identifying common Bay Area macrolichens (foliose and fruticose lichens) to genus. We will begin with an introductory classroom session, where we will cover basic lichen anatomy and terminology, and discuss the roles lichens play in ecosystems such as supporting wildlife. We’ll then divide the rest of the class time between field trips to nearby natural areas and lab time, so that students can observe lichens in their natural habitats and then bring collections back to the lab for study. Students will learn to recognize and distinguish between pollution-tolerant lichen communities that we often see in cities and the more pristine communities that occur in places with high air quality. After taking this course you will be sure to observe lichens, big or small, almost everywhere you go!

Transportation: Not provided. Personal vehicle or carpool required for field trip.
Hiking: Easy
Start/End: Saturday, 9 am – Sunday, 5 pm.

Course Fee: $275/$305

This workshop has been approved for 6 Professional Development Credits by the California Consulting Botanist Board of Certification

Register for this workshop here



Charismatic Microflora: The Ecology and Management of Biological Soil Crusts   —  

February 20 – 23, 2020
Matt Bowker, Kirsten Fisher, Brent Mishler, Tom Carlberg, and Mandy Slate.
Desert Studies Center, Zzyzx, CA

Biological soil crusts (biocrusts) are communities of cryptic organisms, including cyanobacteria, mosses, and lichens that typically stand less than 0.5 cm in height. Biological soil crusts have a significant impact on the world because of their extensive global distribution and their regulation of ecosystem functions. They also provide the opportunity to study amazing biological traits such as desiccation tolerance. These communities are easily damaged or destroyed by human activities such as cattle grazing and off-road vehicle use and are of considerable concern in managing dryland environments.

This workshop will cover the basics, including: What is a biocrust? What are biocrusts composed of? How are biocrust organisms identified? Where are biocrusts found? How do the organisms in biocrusts manage to survive and reproduce in such a seemingly harsh environment? What role do biocrusts play in ecosystems? How can biocrusts be managed? How and where to find compelling, charismatic, and crucial biocrusts? We will combine classroom lecture with hands-on activities at the microscope, and visits to the field.

The Desert Studies Center at Zzyzx is located at Soda Springs on the northwestern edge of the Mojave National Preserve. The surrounding habitats support a range of plant communities, including halophytic vegetation, marsh communities, ponds and springs with pondweed, cattail and sedges, extensive creosote bush scrub and saltbush scrub stands, crescent sand dunes with psammophilous vegetation and plants stabilized by mesquite thickets and the rocky slopes and ravines of the Soda Mountains. Soda Springs itself is home to the Mojave Tui Chub, an endangered fish species, and a variety of desert reptiles and mammals. In addition, 92 bird species have been sighted at the center.

The cost of this workshop has been reduced by a subsidy from the National Science Foundation as outreach for the collaborative grant "Desiccation and Diversity in Dryland Mosses" ( of which the first three listed instructors are Principal Investigators.

Meals: Dinner Thursday through lunch Sunday are included.
Transportation: Not provided. Personal vehicle or carpool required for field trip.
Hiking: Easy
Start/End: Thursday, 4:00 pm – Sunday, 12:00 pm.

Course Fee: $75

This workshop has been approved for 7 Professional Development Credits by the California Consulting Botanist Board of Certification

Register for the wait list here.



Botanical Islands in the Northern Mojave Desert: Exploring the flora of the Amargosa River Basin   —  

March 5 – 8, 2020
Naomi Fraga
Inyo County, California

The Amargosa River Basin in southeastern Inyo County, California, holds exceptional water resources that form isolated alkaline wetlands, or hydrological islands, which support numerous endemic plant species. It also contains striking sky island mountain ranges that are primarily composed of calcareous rock. This region has seen very little botanical documentation in the past despite the fact that alkali wetlands and calcareous substrates are known to hold several rare and endemic plant species. On this trip, we will explore findings from recent floristic expeditions in the Nopah Range and Resting Spring Range and surrounding valleys in the Amargosa River Basin. The study area is at the intersection of two major floristic provinces, the Mojave Desert and the Great Basin Desert, and holds many disjunct populations, species at the edge of their range, and rare and endemic taxa. Field trips will explore expansive wetlands and calcareous mountain slopes. We will also meet with local experts involved in conservation efforts.

Accommodations not included, but special rates available for both camping and rooms for the group at the Shoshone RV Park ( Details will be provided upon registration.

Transportation: Not provided. Driving up to one hour to field sites might require 4WD vehicle.
Hiking: Moderate to occasionally strenuous
Start/End: Thursday, 4:00 pm – Sunday, 12:00 pm.

Course Fee: $375/$405

This workshop has been approved for 7 Professional Development Credits by the California Consulting Botanist Board of Certification

Register for the wait list here.



Birds   ——  

March 27 – 29, 2020
Rauri C.K. Bowie



50 Plant Families in the Field: San Francisco Bay Area   ——  

March 26 – 29, 2020
Linda Beidleman



50 Plant Families in the Field: Monterey Bay   ——  

April 23 – 26, 2020
Linda Beidleman



Wetland Delineation: Identification and Delineation of Federal and State Aquatic Resources   ——  



Poaceae I   ——  



Poaceae II   ——  



California’s Native Bees: Biology, Ecology, and Identification

May 29 – 31, 2020
Gordon Frankie, Rollin Coville, Jaime Pawelek, and Sara Witt




June 5 – 7, 2020
Tom Parker and Michael Vasey



Seaweed Frolic in Monterey Bay

June 6 – 9, 2020
Kathy Ann Miller



Two Shastas: Shasta Valley and The Mysterious North Side of Mount Shasta

June 25 – 28, 2020
Julie Kierstead and Heath Bartosh



Botany Basics

July 9 – 10 and July 11 – 12, 2020
Morgan Stickrod and Sophie Winitsky



Flora of the Northern Mendocino Coast

July 10 – 12, 2020
Teresa Sholars



Flora of the San Jacinto Mountains

July 16 – 19, 2020
Scott White




August 8 – 9, 2020
Carl Rothfels



Some Like It Hot: Late Summer Flora of the Eastern Mojave Highlands

September 24 – 27, 2020
Jim André and Tasha La Doux
Sweeney Granite Mountains Desert Research Center

The Eastern Mojave Desert represents one of the most floristically diverse regions in California. This incredible diversity is, in part, due to the region’s proximity to the North American Monsoon and its prominent summer rainfall regime. Approximately 10% of eastern Mojave annuals are considered “summer annuals,” species that germinate following summer rainfall. In addition, more than 25% of perennial species in this region flower in late summer/early fall. Examples of plant families that respond to summer rain include: Nyctaginaceae, Amaranthaceae, Euphorbiaceae, Polygonaceae, Poaceae, and Asteraceae. This course will introduce botanists to the ecology and taxonomy of the diverse late summer/early fall flora in the eastern Mojave Desert, with special emphasis on rare or unique species. Through field observation, lab identification, and evening presentations, participants will gain a better understanding for the major plant families that comprise the hot-season flora. This field-intensive workshop is intended for botanists with moderate to advanced taxonomic training, and for those with an interest in learning more about this seldom-seen component of California’s flora. Field trips will target the mid to higher elevations of the Mojave National Preserve, planned in accordance to optimal blooming conditions.

Accommodations: Shared dormitories with bathrooms. Tent camping will also be available.
Meals: Dinner Thursday through lunch Sunday included.
Transportation: Vehicles must have good clearance and sturdy tires (including a spare!). Carpooling possible. High clearance 4x4 with extra passenger space preferred.
Hiking: Easy to moderate; short hikes in sometimes rugged terrain.
Start/End: Thursday 4:00 pm – Sunday 12:00 pm.

Course Fee: $570/$600

This workshop has been approved for 7 Professional Development Credits by the California Consulting Botanist Board of Certification

If you are interested in this workshop, please fill out this Google form.



Oaktober in Oaklandia: Nuts, Cups, and Hairy Armpits

October 9 – 11, 2020
Paul Manos and Al Keuter



Wetland Delineation: Identification and Delineation of Federal and State Aquatic Resources

October 19 – 21, 2020
Terry Huffman
Rush Ranch, Solano County, California

Aquatic resources include wetlands, as well as all other types of aquatic habitats. Wetlands are typically viewed as the soggy portions of the landscape that are covered—often intermittently—with shallow water, have soils saturated with water, and have plants that look different from those in surrounding areas. Scientific studies show that wetlands are essential for maintaining the biological, chemical, and physical integrity of the aquatic ecosystem. Federal and state programs regulate impacts to wetlands and other aquatic habitats as part of their overall water quality protection strategy. These agencies differ in how wetlands and other waters are defined and how they are geographically delineated.

This three-day workshop will emphasize the definitions and delineation methods for wetlands and other aquatic habitats used by the (1) US Army Corps of Engineers and the US Environmental Protection Agency; (2) California State Water Resources Control Board and its Regional Water Quality Control Boards; (3) California Department of Fish and Wildlife; (4) San Francisco Bay Conservation and Development Commission; and (5) the California Coastal Commission. Other definitions and delineation methods used by US Department of Agriculture and the US Fish and Wildlife Service to identify and delineate aquatic resources will also be discussed in comparison to the wetland and other waters definitions and delineation methods used by the Corps and EPA.

The course offers clear and concise explanations and comparisons of the wetland definitions and methods used by these agencies, including the latest changes in methodology and approaches for delineating jurisdictional boundaries; explanations of key terminology; and practical hands-on field experience for private consultants, agency personnel, attorneys, academics, and the general public who are involved with resource protection, impact assessment, environmental restoration, and/or seeking project authorization from the above mentioned agencies. Our course instructor’s primary method of instruction is “learning by doing,” so prepare to get dirty!

We will meet at the Solano Land Trust’s Rush Ranch facility near Suisun City, Solano County, California, for classroom lectures and field training exercises. Classroom lectures in the mornings will prepare us for afternoon field training exercises that provide hands-on experience using the various wetland delineation methods, with a focus on field delineation of wetland-upland boundaries and analysis of results. Field work will include exploring how and why the various definitions and associated methodologies produce different results in terms of wetland area delineated. Class will be held rain or shine!

Presented in cooperation with the Solano Land Trust.

Transportation: Personal vehicle required for field trip (carpooling possible)
Hiking: Easy, flat terrain.
Start/End: Monday, 9:00 am – Wednesday, 5:00 pm.

Course Fee: $475/$505

This workshop has been approved for 7 Professional Development Credits by the California Consulting Botanist Board of Certification

If you are interested in this workshop, please fill out this Google form.



Mushrooms and Mycorrhizae of Mendocino

December 4 – 6, 2020
Matteo Garbelotto and Teresa Sholars
Albion Field Station and local field sites

This workshop will provide techniques to identify some of the common edible, toxic, and ecologically important mushroom species on the Mendocino Coast. Each day will start with classroom presentations and the afternoons will be spent in Bishop pine and mixed redwood forests seeing species in the field. The following topics will be covered: identification and phylogeography of mushrooms, description, classification, and ecology of mycorrhizae, importance of mycorrhizae in forestry and the food industry, population genetics and mycorrhizae, the mycorrhizal community: factors affecting its composition, how disturbance affects mycorrhizae and forest age.

Accommodations: Shared dormitories with bathrooms.
Meals: Dinner Friday through lunch Sunday included.
Transportation: Not provided. Personal vehicle or carpooling required to access field sites.
Hiking: Easy to moderate
Start/End: Friday 4:00 pm – Sunday 12:00 pm.

Course Fee: $400/$430

This workshop has been approved for 6 Professional Development Credits by the California Consulting Botanist Board of Certification

If you are interested in this workshop, please fill out this Google form.



Poaceae I

December 10 – 11, 2020
J. Travis Columbus
UC Berkeley and local field site

“I am the grass; I cover all.” —Carl Sandburg, “Grass”

Prominent in plant communities throughout California, the grass family, Poaceae, is the state’s second most diverse plant family (after Asteraceae). Its members include cool-season and warm-season species, annuals and perennials, natives and exotics, and widespread dominants and rare endemics. This workshop will provide a better understanding of this ubiquitous, species-rich family. Participants will be instructed in detail on the vegetative and reproductive features of grasses. Aspects of anatomy, physiology, and ecology will also be addressed. Most of our time will be spent learning to use the identification keys in the second edition of The Jepson Manual. Special attention will be given to difficult couplets and taxa. In addition, participants will learn how to identify common genera by using diagnostic characteristics. If conditions are favorable, we will go to the field on Friday afternoon; most of this class will take place in a lab classroom.

Experience required: Some previous plant identification.
Transportation: Personal vehicle required for possible field trip (carpooling possible).
Hiking: Easy.
Start/End: Thursday, 8:30 am – Friday, 5:00 pm.

Course Fee: $350/$380

This workshop has been approved for 7 Professional Development Credits by the California Consulting Botanist Board of Certification

If you are interested in this workshop, please fill out this Google form.



Poaceae II

December 12 – 13, 2020
J. Travis Columbus
UC Berkeley and local field site

For those who have taken the introductory workshop or have experience with grass identification, the advanced grasses workshop offers a greater variety of California genera and species for study, more practice with keying, and more genera to learn on sight. Completion of the introductory Poaceae workshop (Poaceae I), or equivalent prior experience, is highly recommended. Participants are encouraged to bring samples of grasses to share with the group.

Experience required: Working knowledge of grass morphology and previous plant identification experience, including keying grasses
Start/End: Saturday, 8:30 am – Sunday, 5:00 pm

Course Fee: $350/$380

This workshop has been approved for 7 Professional Development Credits by the California Consulting Botanist Board of Certification

If you are interested in this workshop, please fill out this Google form.



About Our Instructors

Jim André has served as Director of the University of California’s Granite Mountains Desert Research Center since 1994. Jim’s academic training is in plant ecology, taxonomy, and rare plant population biology. With 35 years of experience conducting floristic studies throughout the desert southwest, Jim has contributed 45,000 herbarium specimens and discovered and published several species new to science. He is author of floras of the Mojave National Preserve and San Bernardino County Desert Region (in press) and is currently working on a Flora of the Mojave Desert, a lifelong endeavor that spans four states. Jim has been a strong advocate for native plant conservation and serves as the Senior Advisor to the California Native Plant Society’s Rare Plant Program. He is a frequent lecturer and field instructor and has taught numerous workshops through the Jepson Herbarium at UC Berkeley.

Heath Bartosh is Co‐Founder and Senior Botanist of Nomad Ecology, based in Martinez, California, and a Research Associate at the University and Jepson Herbaria at UC Berkeley. After graduating from Humboldt State University, Heath began his career as a professional botanist in 2002 and has been an earnest student of the California flora for nearly 20 years. His general research interests are in California vascular plant floristics with a focus on distribution, soil and geologic relationships, endemism, regional and local rarity, and habitat conservation. At a more specific level, his primary interests are floristics of the California Coast Ranges and the fire-following annual plant species found there. His research on post-fire floras focuses on the composition and duration of the eruptive dominance and subsequent fleeting abundance of annual plant species at regional scales within the California Coast Ranges. In 2009, he also became a member of the Rare Plant Program Committee at the state level of CNPS, helping to develop current and accurate information on the distribution, ecology, and conservation status of California's rare and endangered plants and promoting the use of this information to influence plant conservation in California.

Linda Beidleman has an M.S. in Biology from Rice University. She is co-author of Plants of the San Francisco Bay Region and Plants of Rocky Mountain National Park. She has worked with the California Native Plant Society, especially as co-supervisor for the CNPS East Bay plant nursery. Linda has taught short flora and ornithology courses for the Rocky Mountain National Park and the Aspen Center for Environmental Studies.

Rauri C. K. Bowie is a professor in the Department of Integrative Biology and Curator of Birds in the Museum of Vertebrate Zoology at UC Berkeley. For as long as he can remember, he has been fascinated by why animals are distributed unevenly around the globe. Much of his research has centered on documenting and studying patterns of species diversity and distribution across heterogeneous landscapes, particularly those inherent to mountains, savannas, and rocky shores. The bulk of his research takes place in tropical habitats in Africa, Central American and Indonesia, as well as across temperate California.

Matt Bowker is an associate professor in the School of Forestry at Northern Arizona University in Flagstaff. His research touches on many aspects of soil ecology, with a current focus on ecological restoration techniques. His most frequent study systems are biological soil crusts (biocrusts), cryptic photosynthetic soil surface communities that may be composed of cyanobacteria, lichens, and bryophytes among other organisms that form a "living skin" over the soil.

Tom Carlberg has a degree in botany from Humboldt State University and has always leaned towards nonvascular organisms. He has been a cryptogamic botanist for 18 years, and has worked for the Forest Service, private contractors, and non-profit organizations. His ongoing interest is mapping the range and distribution of lichen species across California. He has submitted more than two thousand lichen specimens to public and government herbaria. His immediate attention is on the communities of crustose lichens that grow on evergreen leaves of trees and shrubs in the hypermaritime temperate forests of California’s northwest coast. He is the President of the California Lichen Society, where he advocates that even neophytes can contribute to the understanding of California’s lichen flora, much of which still remains to be discovered. He is the President of the California Lichen Society (CALS) and the past Editor of its Bulletin, and a member of the British Lichen Society, the American Bryological and Lichenological Society, and the CALS Conservation Committee.

J. Travis Columbus is a Research Scientist at Rancho Santa Ana Botanic Garden and Professor of Botany at Claremont Graduate University. He earned his Ph.D. from UC Berkeley, where he studied Bouteloua (Poaceae) and related taxa. His current research focuses on the evolution and classification of grasses and buckwheats (Polygonaceae).

Rollin Coville received his Ph.D. degree in Entomology from the University of California at Berkeley in 1978. He recently retired from AT&T where he served as a systems analyst and programmer. For more than 25 years his primary outside interest has been photographing insects and spiders. He also has a strong interest in the biology and behavior of Hymenoptera and has published papers on Trypoxylon wasps and Centris bees.

Kirsten Fisher is a Professor of Biological Sciences at Cal State LA, where she has been a faculty member since 2008. She earned her Ph.D. from UC Berkeley in 2004 and her research interests revolve around the molecular ecology of a desert moss species, Syntrichia caninervis. She is the curator of the CSLA Herbarium and a Research Associate at the Rancho Santa Ana Botanical Garden.

Naomi Fraga is Director of Conservation Programs at Rancho Santa Ana Botanic Garden in Claremont, California. She has been studying plants of the Mojave Desert for over 15 years. Her research interests include plant geography, conservation biology, rare plants of western North America, and taxonomy of monkeyflowers (Phrymaceae). She is particularly interested in the flora of the Mojave Desert and the arid west. Naomi received her Ph.D. in Botany from Claremont Graduate University and she also holds a M.S. in Botany from Claremont Graduate University and a B.S. in Botany and Biology from California Polytechnic University, Pomona. Naomi serves on the board of the Amargosa Conservancy, as Secretary for the Southern California Botanists, and is a council member for the American Society of Plant Taxonomists.

Gordon Frankie is Professor of Insect Biology in the College of Natural Resources at UC Berkeley. He received his Ph.D. in Entomology from UC Berkeley. His research interests are in plant reproductive biology, pollination ecology, and solitary-bee biology. His field research is split equally between California and the seasonally dry tropical forests of Costa Rica. He teaches both lecture and field courses in Applied Conservation Biology at UC Berkeley and in Costa Rica.

Matteo Garbelotto is Adjunct Full Professor in ESPM (Environmental Science, Policy, and Management) at UC Berkeley and is the Statewide Forest Pathologist of the entire UC System. He is a recognized authority on root diseases as well as on forest Phytophthoras. His field of expertise is primarily on the evolutionary processes leading to biological invasions and on approaches to uncover pathways of global movement of microbes. He has published close to 200 scientific publications and has been a pioneer in the field of molecular diagnostic of plant pathogens. Currently he is recognized for his genomic and Citizen Science projects. He has advised on policy issues regarding the introduction and regulation of plant pathogens for countries around the world and is currently a member-at-large of the European Food Safety Authority. He has been recognized twice by the International Society of Arboriculture as the most relevant scientist of the year. Because of his work on Sudden Oak Death, he received a proclamation by the California State Assembly, and he has been declared oak savior by the City and County of San Francisco. He has received the unsung hero award by San Francisco Tomorrow and, recently, he received the US Western Extension Directors Association Award of Excellence. Matteo is a Fulbright Scholar and has two Masters and a Ph.D. from UC Berkeley in Plant Pathology. Besides being a faculty member at U.C. Berkeley, he has been a visiting scientist at the Smithsonian Tropical Research Institute and a visiting professor at the University of Turin. He has been a visiting scientist at the Museum of Natural History in Venice (Italy) where he still holds an honorary curator position for its extensive fungal collection.

Terry Huffman was the U.S. Army Corps of Engineer's (Corps) Chief Wetlands Scientist responsible for the development of technology directed toward assisting the Corps's Regulatory Program. While at the Corps’ Environmental Laboratory in Vicksburg, Mississippi, Dr. Huffman developed the wetlands definition currently in use by the Corps and the U.S. Environmental Protection Agency (EPA) Clean Water Act (CWA) Section 404 Regulatory Program and conducted research and development activities which pioneered the use of multiple field indicators to determine the presence of wetland vegetation, soil, and hydrology conditions. This seminal work led to the development of the wetland delineation methodology in use by the Corps and EPA today. As noted in the preface to the Corps’ 1987 Wetlands Delineation Manual, Part II of the Manual is based on Dr. Huffman’s 1980 paper entitled Multiple Parameter Approach to the Field Identification and Delineation of Wetlands. He has also served as a technical member for the Regional Water Quality Control Board’s (RWQCB) Technical Advisory Team, which developed state wetlands, stream, and riparian definitions; identification criteria, indicator methodology; and technical memorandum for RWQCB regulatory use. Founder of the private consulting firm Huffman-Broadway Group, he has conducted wetland and other waters (aquatic resources) jurisdictional boundary determinations using various agency required methodologies, reviewed and developed regulatory programs and procedures, and developed evidence for litigation and provided expert testimony.

Julie Kierstead has spent her career promoting the discovery, enjoyment, and conservation of the flora of the western United States. From 1989 through 2019, she was Forest Botanist for the Shasta-Trinity National Forest in Northern California. Before that, she started the Berry Botanic Garden Seed Bank for Rare and Endangered Plants of the Pacific Northwest. Julie’s current focus is to encourage exploration and understanding of the Klamath Mountains flora. In recent years, she has collaborated on publishing several newly discovered plants of the Klamath Mountains, including Shasta huckleberry (Vaccinium shastense), Shasta maidenhair fern (Adiantum shastense), and Shasta fawn lily (Erythronium shastense). She instigated a taxonomic overhaul of the stonecrop (Sedum) section Gormania, resulting in a revision of the group. In 2019, Julie discovered a distinctive new species of Phacelia from the mountains of western Shasta County, soon to be published under the name Phacelia damnatio. Julie has contributed over 2,300 free-use photos to CalPhotos and many hundreds of voucher specimens from the Klamath and Cascade Ranges to California herbaria. She is a member of the Rare Plant Program Committee at the state level of CNPS and sits on the Board of Directors of Northern California Botanists.

Al Keuter is a UC Davis graduate who began studying California red oaks in 2013. Hoping to better understand the complex taxonomic relationships within this difficult group, Al focuses on their morphological characteristics. Al also spends time each week as vascular plants curator at the UC Santa Cruz herbarium. Learn more about Al here.

Tasha La Doux attended UC San Diego to receive her B.S. in Ecology, Behavior, & Evolution in 1995, then received a Ph.D. in Botany from Rancho Santa Ana Botanic Garden (Claremont Graduate University) in 2004. She started working for the UC Natural Reserve System in 2007, continues to serve as the park botanist for Joshua Tree NP, and holds a Research Associate position at Rancho Santa Ana Botanic Garden. She has worked as a botanist in the arid lands of the Southwest since 1998 with special focus on plant mating systems, population genetics, desert floristics, and rare plant monitoring. Her floristic work at Joshua Tree National Park over the last 15 years has resulted in over 120 newly added species to the flora, and 1000’s of new rare plant localities, range extensions, and new county records. Over the years, she has been invited to numerous events to speak on desert floristics, taught many botanical workshops, and led 100’s of students each year on field trips in the California deserts.

Paul Manos is Professor and Bass Fellow at Duke University. He has been teaching field courses for over 15 years in the areas of plant communities, biodiversity, and systematics. Dr. Manos's research interests include biogeography, genetics, and evolution. He specializes in the study of woody plants, in particular the oak family and their relatives.

Jesse Miller has spent many years working as a botanist and lichenologist across California and the Pacific Northwest. He received his Ph.D. from the University of Wisconsin-Madison, in integrative biology with an emphasis in plant ecology. He is currently a lecturer at Stanford, where he teaches ecology. His research interests include studying the effects of global change factors such as altered fire regimes on lichen and plant communities. Jesse loves sharing his passion for the natural world with others and enjoys contributing to Northern California’s growing community of lichen enthusiasts.

Kathy Ann Miller has loved seaweeds since her first phycology class at the Bodega Marine Laboratory. She earned her B.A. and Ph.D. degrees in Botany at UC Berkeley with advisors Paul C. Silva and Donald Kaplan. Her extensive time in the field over the last 40 years and her dedication to making specimens for the herbarium are the foundation of her knowledge of the seaweed flora of California, her chief research subject. Kathy Ann is the Curator of Algae at the University Herbarium, UC Berkeley.

Brent D. Mishler is Director of the University and Jepson Herbaria as well as a Professor in the Department of Integrative Biology, where he teaches courses in phylogenetics, plant diversity, and island biology. He received his Ph.D. from Harvard University in 1984. His research interests are in the systematics, evolution, and ecology of bryophytes, especially the diverse moss genus Syntrichia, as well as in the phylogeny of green plants, spatial analysis of biodiversity, and theory of systematics.

Tom Parker is an ecologist who works with plant community dynamics. He was trained at the University of Texas (B.A.) and UC Santa Barbara (M.A., Ph.D.) and is currently a Professor of Biology at San Francisco State University. His research emphasizes plant community dynamics, especially dispersal, seed banks, and seedling establishment. His current projects focus on mycorrhizal fungal mutualists, seed dispersal, and wetland ecology. His research in chaparral forced him to be able to identify Arctostaphylos species, and he's enjoyed them ever since. His serious collecting and systematics work began more than 25 years ago

Jaime Pawelek has a B.S. in Conservation and Resource Studies from UC Berkeley and has worked in the Urban Bee Lab with Dr. Gordon Frankie since 2005. She is now the labs’ primary taxonomist identifying bees from all over California, as well as Costa Rica. Jaime is a Research Affiliate with the Essig Museum, teaches in-depth taxonomic workshops at the Cheadle Center in Santa Barbara and identifies bees for various researchers in California and all across the U.S. Jaime also designs pollinator-friendly gardens, leads medicinal herb walks, and teaches gardening classes to budding herbalists.

Carl Rothfels is an Assistant Professor in the Department of Integrative Biology and the Curator of Pteridophytes at the University Herbarium. A recent transplant to California, he was born and raised in southern Ontario (Canada) and received his Ph.D. from Duke University. His research focuses on the evolution of ferns and lycophytes, with particular interests in the fern family Cystopteridaceae, desert ferns in the genus Notholaena, and the processes of polyploidy and reticulation (hybridization).

Teresa Sholars is a Professor Emeritus from College of the Redwoods in Fort Bragg, California, where she taught classes in identification and ecology of the Mendocino Coast flora, along with mushroom identification and ecology for over 40 years. She is the rare plant and vegetation chair for the Dorothy King Young chapter of CNPS and a retired botanical and ecological consultant. Currently, she is an Adjunct Professor and Curator at the Mendocino College Coast Center Herbarium and Natural History Collection. Teresa is leading a group of volunteers to do relevé surveys to classify the coastal terraces. She is co-author of the treatment for perennial Lupinus in the first edition of The Jepson Manual, author of Lupinus in the second edition of The Jepson Manual, and author of the new perennial Lupinus treatment for Flora of North America North of Mexico.

Mandy Slate is a postdoctoral researcher at the University of Colorado in Boulder. She is broadly interested in understanding how changing environmental conditions influence how plants function and interact. Most of her research involves mosses or biological soil crusts.

Morgan Stickrod has a strong passion for the diversity of the California Floristic Province and feels fortunate to have studied the region's flora as a consulting botanist. He is currently a graduate student at San Francisco State University, finishing his thesis on dispersal dynamics and vegetation patterns of tidal wetland flora and on how key structural processes relate to limitations and tolerance thresholds of the federally endangered Suisun thistle (Cirsium hydrophilum var. hydrophilum). He also works at the San Francisco Public Utilities Commission, where he is involved in a number of rare plant management projects throughout the Santa Cruz Mountains and San Francisco Peninsula watershed.

Michael Vasey is Director of the San Francisco Bay National Estuarine Research Reserve and Associate Director for Science Engagement for the Estuary and Ocean Science Center at San Francisco State University. He received his B.A. from Dartmouth College, M.A. in Ecology and Systematic Biology from San Francisco State University, and Ph.D. from UC Santa Cruz. Mike has been focusing on the systematic relationships in Arctostaphylos for more than 25 years. As part of a team effort, Mike has made major contributions in developing the evolutionary context in which Arctostaphylos can be better understood and in unraveling species relationships within this challenging genus.

Allie Weill is an ecologist and science writer based in Sacramento. Her research and teaching have focused on fire science, plant ecology and evolution, and lichenology, with an emphasis on chaparral ecosystems. She holds a PhD in ecology from the University of California, Davis, and a BA in biology and BS in geophysical sciences from the University of Chicago. Her favorite lichen is Xanthoria parietina.

Scott White is a consulting biologist with Aspen Environmental Group. He holds both a B.A. and an M.A. degree from Humboldt State University. Scott is a former President of the Southern California Botanists and former co-editor of the journal Crossosoma. He is a co-author of The Vascular Plants of Western Riverside County and a Research Associate at Rancho Santa Ana Botanic Garden. He was an original member of the CNPS Vegetation Committee. He has been conducting floristic surveys throughout southern California since 1987 and his favorite long-term project will someday become a vouchered flora of the San Jacinto Mountains, based on herbarium specimens and his own collections.

Sophie Winitsky is currently working as the interim Public Programs Coordinator for the Jepson Herbarium. She received her M.S. in Botany from Rancho Santa Ana Botanic Garden/Claremont Graduate University in 2018. She has studied the California flora while working for the California Native Plant Society, Inyo National Forest, and Rancho Santa Ana Botanic Garden. She specializes in the flora of the Great Basin Desert and completed a floristic inventory of Adobe Valley, Mono County, for her M.S. thesis.

Sara Witt has a B.S. in Conservation and Resource Studies from the University of California, Berkeley. She has worked as a field biologist, ecologist, and educator, with a focus on California plants and pollinators, for more than 10 years, and is the lab manager at the Urban Bee Lab. Sara also works as an ecologist for the non-profit organization Grassroots Ecology, which involves volunteers in habitat restoration and community science projects in open spaces and parks in Santa Clara and San Mateo counties. She also volunteers leading hikes at preserves and open spaces in the Bay Area.