UCLA Herbarium

UCLA Herbarium. The UCLA Herbarium is a major scientific collection of preserved plant specimens housed within the University of California, Los Angeles. Established in the early 20th century, it serves as a critical resource for botanical research, education, and conservation, with a particular focus on the flora of California and the Southwestern United States. Its extensive holdings support work in systematics, ecology, evolutionary biology, and biogeography for students and researchers from UCLA and institutions worldwide.

History and establishment

The origins trace to the early development of the University of California, Los Angeles campus in Westwood, with foundational collections growing from the teaching and research activities of the Department of Ecology and Evolutionary Biology. Key early figures included prominent botanists affiliated with the University of California system who contributed significant specimens. The formalization accelerated in the mid-20th century, aligning with the growth of UCLA as a premier research institution under the leadership of administrators like Franklin David Murphy. Throughout its history, it has integrated important collections from regional studies and collaborations with entities like the Santa Monica Mountains conservancy and various California State University campuses.

Collections and scope

The collection comprises approximately 200,000 accessioned specimens of vascular plants, with significant holdings of bryophytes and lichens. Its geographic scope is strongest for the California Floristic Province, including extensive material from Los Angeles County, the Transverse Ranges, and the Mojave Desert. Special collections include historic specimens from Southern California coastal sage scrub and chaparral communities, many collected before extensive urban development. The herbarium also houses type specimens for several taxa described by researchers from UCLA and the Rancho Santa Ana Botanic Garden, and it maintains an important collection of cultivated plants from the UCLA Mildred E. Mathias Botanical Garden.

Research and academic role

It is integral to the research and teaching missions of UCLA's Department of Ecology and Evolutionary Biology and related programs. Faculty, postdoctoral researchers, and graduate students utilize the specimens for studies in plant taxonomy, phylogenetics, and responses to climate change. The collection supports undergraduate courses in botany and field biology, providing hands-on training in curation and morphology. Collaborative research projects frequently involve partnerships with the California Botanic Garden, the Natural History Museum of Los Angeles County, and federal agencies like the United States Forest Service and the National Park Service.

Facilities and access

The physical facility is located within the Life Sciences building on the UCLA campus. It features compactors for specimen storage, a preparation laboratory, and dedicated spaces for visiting researchers. While primarily a research collection, access is granted to qualified scientists, students, and community researchers by appointment. An ongoing effort to digitize specimens and make data available online is part of broader initiatives like the Consortium of California Herbaria and the Global Biodiversity Information Facility, increasing its accessibility to the international scientific community.

Notable contributions and specimens

Notable holdings include historically significant collections made by botanists such as Henry J. Thompson and Peter H. Raven, who conducted foundational work on California flora. The herbarium contains voucher specimens from ecological studies in the Santa Monica Mountains National Recreation Area and from biodiversity surveys in the Channel Islands National Park. It also preserves specimens documenting the extirpation of native species and the invasion of non-native plants in the Los Angeles Basin, serving as a crucial archive for conservation biology and land management decisions by the California Department of Fish and Wildlife.