Zygnema

Filamentous alga

Zygnema.spp, Filamentous alga. Noted for its paired star shaped chloroplasts, Zygnema is free floating in fresh water. Seen here in a flooded mine shaft pool.

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Filament tip

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Filament cells

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Cell budding

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Filaments with moss

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Habitat

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Photograph detail

Slide 1: Zygnema, Filamentous alga. Tip of filament, showing cells with star shaped chloroplasts. Photographed at x1000, oil immersion, brightfield illumination. Collected from a flooded mine shaft. Cobscar Rake, Redmire Moor. March.

Slide 2: Zygnema, Filamentous alga. Mid filament, showing cells with star shaped chloroplasts. Photographed at x1000, oil immersion, brightfield illumination. Collected from a flooded mine shaft. Cobscar Rake, Redmire Moor. March.

Slide 3: Zygnema, Filamentous alga. Cell budding besides damaged cells. Photographed at x1000, oil immersion, brightfield illumination. Collected from a flooded mine shaft. Cobscar Rake, Redmire Moor. March.

Slide 4: Zygnema, Filamentous alga. Filaments against a background of moss, Philonotis fontana, leaves. Photographed at x100, brightfield illumination. Collected from a flooded mine shaft. Cobscar Rake, Redmire Moor. March.

Slide 5: Zygnema, Filamentous alga. Habitat, a flooded mine shaft. Cobscar Rake, Redmire Moor. March.