The ANSP Diatom Herbarium database can be searched by taxon, geographical location, collector/donor/source, or catalogue number using either basic or advanced search options. Browsing allows you to explore Herbarium holdings. Please, note that the database is not yet complete: we are still in the process of entering data and georeferencing localities.

The image gallery contains light microscope images of types housed at ANSP: you can either select a taxon from the list or scroll through all available images. In the future we will also make available images of other (non-type) specimens.

The development of this database is supported by the NSF grant DBI-0840406.

Please, address your requests for loans and information to the curator Marina Potapova (potapova@ansp.org) and collection manager Jana Vesela (jv439@drexel.edu).