139,102 species and infraspecific names are in the database, 18,324 images, 52,333 bibliographic items, 268,591 distributional records.

AlgaeBase is a database of information on algae that includes terrestrial, marine and freshwater organisms.

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Osmundea pinnatifida (Hudson) Stackhouse Osmundea pinnatifida, lower intertidal, North of Portugal, 2013, Ignacio Bárbara

An Appeal: Citations and AlgaeBase

if you use AlgaeBase when writing up your work in books, journals and reports, please cite the website in your Bibliography. It's a small thing to ask but Google Citations indexes AlgaeBase and we can use these citations to make a case to the University to retain our facilities. The correct way to cite it is:

Guiry, M.D. & Guiry, G.M. (year). AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on (date).

Information and Other Requests

AlgaeBase requires continual maintenance. With nearly 42,000 species and 150,000 names and with few resources, we need to spend all of our available time on data entry and maintenance of the website, which is a 24/7/365 task.
Because of this, it is impossible for us to answer requests for identification of specimens, photographs and requests to provide further information or literature. All the literature and information we have available is on the site as PDFs.
So, we are very sorry, but please do not send e-mails with pictures of specimens for identification or seeking literature as it is impossible for us to respond to such requests.

Michael & Wendy Guiry
April 2014

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