Rhodophyta
| ALGAE – Rhodophyta | Smithsonian Institution, National Museum of Natural History | |
| Botany Online – Rhodophyta | University of Hamburg, Faculty of Biology | |
| Brief Summary about Rhodophyta (including Images) | Curtis Clark, California State Polytechnic University, Pomona | |
| Introduction to the Rhodophyta | University of California, Museum of Paleontology | |
| Rhodophyta | University of Guam, Division of Natural Sciences |