The University and Jepson Herbaria are constantly growing collections, reflecting the on-going growth in our knowledge of plant diversity and distribution. New acquisitions result primarily from 1) in house staff and student collections, 2) standing exchange programs with other herbaria world-wide, 3) specimens sent as gift-for-identification to in-house researchers, and 4) gifts from a diversity of sources, especially non-academic professionals and native plant enthusiasts. The latter often serve as our most valued source of new records from under collected areas in the western United States.

In general, the Jepson Herbarium (JEPS) accessions only vascular plants from California, whereas the University Herbarium (UC) covers all plant groups world-wide. Gifts of California plants will be deposited in the Jepson Herbarium unless the donor specifies otherwise.

All exchange is through the University Herbarium. At present we are not soliciting new exchange programs, due to limitations in our capacity to generate and process our-going material, consisting primarily of specimens from the western United States.

To minimize redundancy of specimens in the San Francisco Bay Area, we have a non-duplication policy with the California Academy of Sciences (CAS/DS). Exceptions are made for types and other particularly significant collections.

Because of limited specimen processing resources and storage capacity, specimens submitted for accessioning in the University of California at Berkeley herbaria should generally meet the criteria detailed as follows:

  1. Be well-prepared, with sufficient material to occupy a standard herbarium sheet (unless rarity dictates otherwise). Extraneous plants and dirt should be removed (note associates and substrate on label if relevant, not as part of the specimen!).
  2. Possess fertile structures and/or other critical identifying features appropriate to the plant group.
  3. Be accompanied by ready-to-mount labels (permanent ink on acid free paper) with complete label data.
  4. Fall within the following desiderata:

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