MAREK MIS / SCIENCE PHOTO LIBRARY MAREK MIS / SCIENCE PHOTO LIBRARY
Desmids and sphagnum moss. Darkfield illuminated polarised light micrograph of Micrasterias apiculata (green, round) and Hyalotheca sp. (green, long) desmids amongst Sphagnum sp. moss leaves (background). Desmids are a common group of freshwater single-celled algae that have intricate cell walls. Micrasterias is highly adapted to nutrient poor, acidic water. Magnification: x100 when printed 10 centimetres wide.
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