MAREK MIS / SCIENCE PHOTO LIBRARY MAREK MIS / SCIENCE PHOTO LIBRARY
Desmids. Polarised light micrograph of a Netrium sp. (oval, centre) and Micrasterias truncata desmid (round, upper left) on sphagnum sp. moss. 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: x200 when printed 10 centimetres wide.
Model release not required. Property release not required.