MAREK MIS / SCIENCE PHOTO LIBRARY MAREK MIS / SCIENCE PHOTO LIBRARY
Desmid on sphagnum moss. Polarised light micrograph of a Hyalotheca sp. desmid (long, centre) on sphagnum sp. moss (background). Desmids are a common group of freshwater single-celled algae that have intricate cell walls. Magnification: x100 when printed 10 centimetres wide.
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