Recommended Citation Formats

General Citation

Biodiversity data provided by the participants of the Consortium of California Herbaria (Accessed through CCH1 Data Portal,, 2021 May 17.

Literature Citation

CCH1 Portal. 2021. Biodiversity data provided by the participants of the Consortium of California Herbaria ( Accessed on May 17).

Data Usage Policy

Occurrence Records

The Consortium of California Herbaria (CCH) provides access to collection data from multiple institutions. Use of any specimen data accessed through the CCH1 portal requires adherence to the terms and conditions in the following data usage policy:

  1.     The quality and completeness of data cannot be guaranteed. while CCH1 will make every effort possible to control and document the quality of the data it publishes, the data are made available "as is". No warranty is given or implied as to their accuracy, currency, completeness, or appropriateness for use. Data users are encouraged to personally verify data before use in critical applications.
  2.     Neither the participating herbaria nor CCH1 is responsible for damages resulting from for any misuse, misinterpretation, or unintended consequences of datasets or from errors or omissions that may exist in the data. Data errors should be reported to the herbarium of origin.
  3.     These data are intended for use in education and research and may not be reposted, repackaged, redistributed, or sold in any form. Links or references to the CCH pages are encouraged.
  4.     Data may be downloaded to files and altered in format for analytical purposes, however the data should be referenced using the recommended citations above.
  5.     Where applicable, users shall respect restrictions of access to sensitive data.
  6.     CCH1 may update or make changes to the data provided at any time without notice. However, the CCH makes no commitment to update the information contained herein. Questions concerning the data should be directed to the Technical Editor, Jason Alexander (, or the contact listed for individual herbaria (please see the CCH1 participants page).
  7.     The CCH1 display includes links to other websites; for use of that material (for example, specimen images or archival data) please consult the pertinent website.


Images within this website have been generously contributed by their owners to promote education and research. These contributors retain the full copyright for their images. Please see the participants page of CCH2 for image use rights for each herbaria.

Notes on Specimen Records and Images

Specimens are used for scientific research and because of skilled preparation and careful use they may last for hundreds of years. Some collections have specimens that were collected over 100 years ago that are no longer occur within the area. By making these specimens available on the web as images, their availability and value improves without an increase in inadvertent damage caused by use. Note that if you are considering making specimens, remember collecting normally requires permission of the landowner and, in the case of rare and endangered plants, additional permits may be required. It is best to coordinate such efforts with a regional institution that manages a publicly accessible collection.

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