Plate 5 + 6. — Species from the Euastrum crassum - Micrasterias jenneri assemblage, characteristic of shallow, oligotrophic, acidic water bodies rich in humic acids.

Drawings @ Peter Coesel (Desmids of the Lowlands)

Plate 5 — 1. Staurastrum scabrum; 2. Euastrum crassum; 3. Closterium directum; 4. Pleurotaenium minutum; 5. Actinotaenium cucurbita; 6. Cosmarium pyramidatum;

Plate 6 — 7. Tetmemorus brebissonii; 8. Micrasterias oscitans; 9. Staurastrum hystrix; 10. Docidium undulatum; 11. Micrasterias jenneri; 12. Staurastrum furcatum; 13. Euastrum ampullaceum.