| Global Registry of Biorepositories (GRBio) | Global Registry of Biorepositories | |
| New York Botanical Garden (NYBG) | Index Herbariorum |
| Academy of Natural Sciences, Philadelphia (ANSP) | Diatom Herbarium (database) | |
| Academy of Sciences of the Czech Republic, Institute of Botany (CCALA) | Culture Collection of Autotrophic Organisms (listing) | |
| Botanische Staatssammlung München (M) | The Diatom Collection of Franz Josef Weinzierl (database) | |
| California Academy of Sciences (CAS) | California Academy of Sciences Diatom Collection (database) | |
| Charles Darwin Foundation (CDS) | Collection Database of the Charles Darwin Foundation (database) | |
| Hein de Wolf, Beverwijk | International Survey of Diatom Collections (listing) | |
| Humboldt-Universität Berlin (BHU) | Collection of Christian Gottfried Ehrenberg (listing) | |
| Real Jardín Botánico Madrid (MA) | Herbario de Criptogamia (database) | |
| Smithsonian Institution, U.S. National Herbarium (US) | Algal Collection (Type Collection) (database) | |
| Stiftung Alfred-Wegener-Institut für Polar- und Meeresforschung (BRM) | Diatom Collection of Friedrich Hustedt (database) | |
| Swedish Museum of Natural History (S) | Algae: Registered Specimens (database) | |
| Microalgae (database) | ||
| University of Michigan Herbarium (MICH) | Search MICH Type Collections (Algae) (database) | |
| University of Hamburg, Herbarium Hamburgense (HBG) | Algae (listing) |