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Transmission electron micrograph of a whole plate scale from the surface of a cell.
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Transmission electron micrograph of a whole spine scale.
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Mahide, Castille and Leon, Spain
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Rozas de Puerto Real, Comunidad de Madrid, Espaa
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Portrait of Acanthocystis aculeata HERTWIG & LESSER, 1874, a heliozoan with long thin radiating axopodia containing bead-like extrusomes and layered surface plates with shorter curved sharp projecting spines. This individual contains zoochlorellae. From freshwater pond near Boise, Idaho. Brightfield.
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Transmission electron micrograph of whole spine scales and plate scales.
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Mahide, Castille and Leon, Spain
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Valganon, La Rioja, Spain
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The picture shows the two types of actinomorphic siliceous spines (the shorter type is forked, see inset top right) and the tangential scales. Nucleus is clearly shown together with some food vacuoles. Sample from sphagnum pond Dosenmoor near Neumuenster (Schleswig-Holstein, Germany). Images were taken using Zeiss Universal with Olympus C7070 CCD camera.
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, Andaluca, Espaa
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Acanthocystis turfacea (a-can-tho-sis-tis tur- fats-ee-a), a centrohelid heliozoon. Body coated with a layer of flattened siliceous scales and spine scales. Spine scales are of two lengths, and forked at their apices. This sample from moss. Nucleating site for axopodia just about evident in the cell to the right. Differential interference contrast.
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Lumbreras, La Rioja, Spain
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Acanthocystis turfacea (a-can-tho-sis-tis tur- fats-ee-a), a centrohelid heliozoon. Body coated with a layer of flattened siliceous scales and spine scales. Spine scales are of two lengths, and forked at their apex. This sample from moss. Differential interference contrast.
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Melgar de Tera, Castille and Leon, Spain
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Acanthocystis turfacea (a-can-tho-sis-tis tur- fats-ee-a), a centrohelid heliozoon. Body coated with a layer of flattened siliceous scales and spine scales. Spine scales are of two lengths, and forked at their apices. Axonemes terminate on central granule or centroplast, shown here. This sample from moss. Differential interference contrast.
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Lumbreras, La Rioja, Spain
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Acanthocystis turfacea (a-can-tho-sis-tis tur- fats-ee-a), a centrohelid heliozoon. Body coated with a layer of flattened siliceous scales and spine scales. Spine scales are of two lengths, and forked at their apices. This sample from moss. Differential interference contrast.
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Lumbreras, La Rioja, Spain
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Acanthocystis turfacea (a-can-tho-sis-tis tur- fats-ee-a), a centrohelid heliozoon. Body coated with a layer of flattened siliceous scales and spine scales. Spine scales are of two lengths, and forked at their apex. The cytoplasm of this species contains often symbiotic algae. The body of this specimen measures 88 microns in diameter. This specimen was collected in a pond near Konstanz, Germany. Differential interference contrast.
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Vilobi Del Penedes, Catalonia, Spain
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Portrait of Acanthocystis turfacea (Carter, 1863), a centroheliozoon with tangentially layered siliceous scales and two types of forked radial siliceous spines (one short, the other long) and radiating axopodia with extrusomes, all visible in this image. Chlorella endosymbionts are present. From standing fresh water near Boise, Idaho. Brightfield.
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Lumbreras, La Rioja, Spain
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Portrait of Acanthocystis turfacea (Carter,1863), a centroheliozoon with tangentially layered siliceous scales and two types of forked radial siliceous spines (one short, the other long) and radiating axopodia with extrusomes, all visible in this image. Detail of radiating forked siliceous spines of Acanthocystis turfacea. . From standing fresh water near Boise, Idaho.DIC.