Plate 1 + 2. — Species from assemblage 1: the Cosmarium insigne - Staurastrum gladiosum assemblage, characteristic of shallow, mesotrophic, circumneutral to slightly alkaline water bodies.
Drawings
@ Peter Coesel (Desmids of the Lowlands)
Plate 1 — 1. Staurastrum furcigerum; 2. Cosmarium insigne; 3. Staurodesmus cuspidatus; 4. Gonatozygon monotaenium; 5. Micrasterias crux-melitensis; 6. Pleurotaenium trabecula;
Plate 2 — 7. Cosmarium protractum; 8. Staurastrum gladiosum; 9. Desmidium aptogonum; 10. Staurastrum manfeldtii; 11. Staurastrum avicula; 12. Xanthidium antilopaeum; 13.Cosmarium turpinii.