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San Martin De Castaneda, Castille and Leon, Spain
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Los Cotos, Madrid, Spain
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Ribadelago de Franco, Castilla y Len, Espaa
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Galende, Castilla y Len, Espaa
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Ribadelago de Franco, Castille and Leon, Spain
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Ribadelago, Castille and Leon, Spain
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Lumbreras, La Rioja, Spain
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Porto, Castille and Leon, Spain
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Ribadelago de Franco, Castille and Leon, Spain
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Navas de Estena, Castille la Mancha, Spain
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Lumbreras, La Rioja, Spain
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Rancho de la Herradura, Andalusia, Spain
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Ribadelago de Franco, Castille and Leon, Spain
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Matalebreras, Castille and Leon, Spain
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Candanchu, Aragon, Spain
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El Maillo, Castille and Leon, Spain
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San Martin De Castaneda, Castille and Leon, Spain
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Lumbreras, La Rioja, Spain
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San Martin De Castaneda, Castille and Leon, Spain
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, Comunidad de Madrid, Espaa
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Differential interference contrast.
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Differential interference contrast.
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Micrasterias(mike-raz-tear-ee-ass) is a genus of unicellular algae in the family Desmidiaceae. The cells are flattened and disc-like. The cells of the genus Micrasterias are organized in two semi-cells that are mirror images of each other. The semicells have a distinctive shape with an intricate lobes and indentation. At the end of the lobes the cell wall may sometimes form notches or short spines. The nucleus is located in the centre between the semicells. Each semicell has a chloroplast with some pyrenoids. Usually found in oligotrophic, acid waters. This specimen was collected in a moor located in the Salzburger Land, Austria. Dark ground illumination.
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Focus on cellwall surface. Scale bar indicates 50 µm.Sample from the pond Hegne Moor situated in the vicinity of Lake Constance. The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Universal with Olympus C7070 CCD camera.Image under Creative Commons License V 3.0 (CC BY-NC-SA).