Lichens
| British Lichen Species Gallery | Mike Sutcliffe | |
| Flechtenbilder | Felix Schumm | |
| Foliicolous Lichens and their Lichenicolous Fungi | The Field Museum | |
| Forest Lichens | The Hidden Forest | |
| ITALIC – The Information System on Italic Lichens | KeytoNature – Dryades | |
| Lichens of Belgium, Luxembourg and northern France | Paul Diederich, Christian Ries & Société des Naturalistes Luxembourgeois | |
| Lichen Images | Ulrich Kirschbaum | |
| The Lichen Photo Gallery | University of Oslo, Botanical Museum | |
| The Ways of Enlichenment Lichen Photogallery | Ways of Enlichenment | |
| Lichen Photos | Biopix | |
| Lichen Portrait Gallery | Lichen.com | |
| Lichen Species with Images | Consortium of North American Lichen Herbaria | |
| Photos of Lichenized and Lichenicolous Fungi of Iran | University of Tabriz, Department of Plant Science | |
| Photography from the lichenological community | Crustose.net | |
| Lichens | Tim Wheeler | |
| Lichens Home Page | Stephen Sharnoff | |
| Líquenes de Chile | Chilebosque.cl | |
| Irish Lichens | Jenny Seawright | |
| Lichens et champignons lichénicoles des Pyrénées-Orientales | Mycologie et lichenologie en Catalogne nord | |
| Pictures of Tropical Lichens | André Aptroot and Laurens Sparrius | |
| VICTORIA - Lichens from Northern Victoria Land (Continental Antarctica) | University of Trieste | |
| Cladonia in the Netherlands | Laurens Sparrius |