Ulothrix aequalis

Ulothrix aequalis is a species of green algae. It is a freshwater species, typically found in running waters. It has been reported from Europe, the Americas, Asia, and New Zealand.

Description

Ulothrix aequalis consists of uniseriate filaments of cells. The cells are cylindrical, 12–22 microns broad and 26–30 microns long. They are attached a cell or rhizoids at the base. The cell wall is more or less thickened and often striated. Cells each contain a broad, girdle-shaped chloroplast which covers at least half of the cell circumference; the chloroplast has one or two pyrenoids.
Asexual reproduction is by zoospores or aplanospores. Akinetes are also produced, and they lack distinct ornamentation. Sexual reproduction is via biflagellate gametes.