Fifteen cultures demonstrate the diversity of morphology and habit found in all the major groups.
| Acrochaetium | Euglena | Ulothrix |
| Anabaena | Gloeocapsa | Vaucheria |
| Chlamydomonas | Oedogonium | Volvox |
| Closterium | Scenedesmus | Cosmarium |
| Sphacelaria | Eudorina | Tolypothrix |
Instruction Manual included.