Ulothrix

Green alga

Ulothrix spp., Green filamentous algae. A genus of filamentous algae found in freshwater and damp terrestrial habitats, such as a the north facing drystone wall as seen in these examples. The cells along the filament are generally wider than long, with a dome shaped apical cell.

1 / 6

Cells on filament

2 / 6

Cells on filament

3 / 6

Algae on wall

4 / 6

Algae on wall

5 / 6

Alga over lichen

6 / 6

Surface detail

❮ ❯

Photograph detail

Slide 1: Ulothrix spp., Green filamentous alga. Collected from a damp, north facing sandstone drystone wall. Domed apical cells and cell division visible. Photographed at x400, brightfield illumination. Hargill, Redmire. March.

Slide 2: Ulothrix spp., Green filamentous alga. Collected from a damp, north facing sandstone drystone wall. Domed apical cells and cell division visible. Photographed at x100, brightfield illumination. Hargill, Redmire. March.

Slide 3: Ulothrix spp., Green filamentous alga. Growing on a damp, north facing sandstone drystone wall. Hargill, Redmire. March.

Slide 4: Ulothrix spp., Green filamentous alga. Growing on a damp, north facing sandstone drystone wall. Hargill, Redmire. March.

Slide 5: Ulothrix spp., Green filamentous alga. Growing over e lichen, Parmelia saxatilis. Collected from a damp, north facing sandstone drystone wall. Hargill, Redmire. March.

Slide 6: Ulothrix spp., Green filamentous alga. Surface detail showing dark apical cells. Collected from a damp, north facing sandstone drystone wall. Hargill, Redmire. March.