portrait

Description:

Gonatozygon (go-nat-owes-eye-gone) brebissonii. Cells are mostly elongated and cylindrical and slightly bent. The apices are swollen and rounded. The nucleus is located centrally. The cell wall may be covered with dots, granules or short spines. Each semi-cell contains a single, ribbon-like chloroplast with many aligned pyrenoids. The chloroplasts may be slightly spiralled and are centrally placed. Cells can be loosely attached together to form a filament. This genus is found in moderate to weakly alkaline waters (pH 6-6.8) in bog ponds or moors. This specimen was collected in freshwater ponds near Konstanz, Germany. The two separated chloroplasts are visible as is the central located nucleus. 200 microns. Differential interference contrast.