Closterium desmid. Polarised light micrograph of a Closterium sp. desmid green alga. 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.
Model release not required. Property release not required.