Your name:

Astrid Biddle

Social Media Details (Twitter, Instagram):

Dr Astrid Biddle @astrid_biddle

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Micro images

Image title:

Batrachospermum (perhaps Sheathia) species

Image description:

Batrachospermum (perhaps Sheathia) species from near the source of the River Mimram, a chalk stream in Hertfordshire. Up to eight Carposporophytes per whorl, each about 120 µm across.