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Ollicola vangoorii (Conrad, 1938) Voers, 1992. Lorica: 2-3 x 3-5 microns (2-3 x 3-7 microns), protoplast diameter: 1-2 microns (2-3 microns).The cell is oval-globular and carries two unequal heterokont flagella. It resides in a lorica, which is divided into an anterior cylindrical and a basal conical part. The lorica wall may be conspicuously thickened, with a yellow or orange tint. The intensity of the colour varies, depending on the degree of Fe and Mn mineralization. A transverse striation of the lorica is sometimes visible by light-microscopy. When viewed by electron microscopy, the lorica appears to be fibrous, constructed of a spirally curved ribbon, similar to the lorica of some bicosoecids. The number of transverse striations varies from about 5 to about 10. Fine structural studies show that C. vangoorii is bacterivorous but also possesses an apparently typical chrysophyte chloroplast.
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Heterochromonas (het-err-ock-row-moan-ass) opaca Skuja, 1948. Cell outline is oval. Cells are about 16 - 18 microns long and somewhat dorso-ventrally flattened, and have an anterior protrusion and a central nucleus. The cells appear to be rigid. The cells have a deep ventral depression and are somewhat warty. Two flagella insert subapically into the depression, the anterior flagellum is about 0.5 times cell length, and the posterior flagellum is slightly longer than the cell and inserts below the anterior flagellum. The cells move by gliding with the anterior flagellum directed forwards and the posterior flagellum trailing.
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Heterochromonas opaca Skuja, 1948. Cell outline is oval. Cells are about 16 - 18 microns long and somewhat dorso-ventrally flattened, and have an anterior protrusion and a central nucleus. The cells appear to be rigid. The cells have a deep ventral depression and are somewhat warty. Two flagella insert subapically into the depression, the anterior flagellum is about 0.5 times cell length, and the posterior flagellum is slightly longer than the cell and inserts below the anterior flagellum. The cells move by gliding with the anterior flagellum directed forwards and the posterior flagellum trailing.
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Chromulina (crumb-you-line-a) nebulosa, a small chrysophyte (stramenopile) with a single emergent flagellum, and with a golden plastid. Phase contrast microscopy.
data on this strain.
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Chromulina (crumb-you-line-a) nebulosa, a small chrysophyte (stramenopiles) with a single emergent flagellum. A second short flagellum is visible because cell division is beginning to occur (note the two chloroplasts) and a second flagellum has formed. -Phase contrast microscopy.
data on this strain.
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Calycomonas (cal-owe-moan-ass) small loricate stramenochrome (chrysophyte). One long (hairy) flagellum draws swimming cells forwards. Lorica made up of bands or strips, margins or edges of which are evident in this micrograph. With plastids with chlorophylls a and c. Differential interference contrast.
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Calycomonas (cal-owe-moan-ass) small loricate stramenochrome (chrysophyte). One long (hairy) flagellum draws swimming cells forwards. Lorica made up of bands or strips, margins or edges of which are evident in this micrograph. With plastids with chlorophylls a and c. Differential interference contrast. This image shows the eyespot at the anterior corner of the plastid. Differential interference contrast.
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Calycomonas (cal-owe-moan-ass) small loricate stramenochrome (chrysophyte). Lorica made up of bands or strips, margins or edges of which are evident in this micrograph. Differential interference contrast.
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Siphomonas, flagellate of uncertain affinities. Rate. Cells occur singly in this branching mucous colony. Cells observed but did not hang around long enough to be photographed. From Lake Donghu, China. Phase contrast micrograph.
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Siphomonas, a colonial flagellate. The cells are housed at the end of a tube of mucus, but many tubes join together to form a branching colony with a shape that is a bit like a tree. Each cell has two flagella.
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Portrait of the colorless chrysophyte, Siphomonas fritschii (Pringsheim,1946). Cells occur singly or in pairs at the ends of hollow, sometimes forked tubes with their flagella protruding. These tubes are sometimes tinged various shades of brown due to manganese and iron salts. The cells are rounded posteriorly and slightly truncate anteriorly. Two unequal flagella arise from the edge of the anterior end. A small greenish stigma lies near the flagellar insertions. The contractile vacuole is seen posteriorly in the uppermost cell. The cells frequently flee their stalks to swim free. Collected from an ephemeral freshwater pool near Boise, Idaho November 2004. Previously reported only from England and France. A dense growth of bacteria is evident in this image. DIC.
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Portrait of the colorless chrysophyte, Siphomonas fritschii (Pringsheim,1946). Cells occur singly or in pairs at the ends of hollow, sometimes forked tubes with their flagella protruding. These tubes are sometimes tinged various shades of brown due to manganese and iron salts. The cells are rounded posteriorly and slightly truncate anteriorly. Two unequal flagella arise from the edge of the anterior end. A small greenish stigma lies near the flagellar insertions (seen best here in the cell at the viewerâs lower left). The contractile vacuole is seen in the two uppermost cells here. The cells frequently flee their stalks to swim free. Collected from an ephemeral freshwater pool near Boise, Idaho November 2004. Previously reported only from England and France. A dense growth of bacteria is evident in this image. Phase contrast.
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Portrait of a group of Siphomonas fritschii (Pringsheim,1946), colorless chrysophytes, Cells occur singly or in pairs at the ends of hollow, sometimes forked tubes with their flagella protruding. These tubes occur in tangles and are sometimes tinged various shades of brown due to manganese and iron salts. The cells are rounded posteriorly and slightly truncate anteriorly. Two unequal flagella arise from the edge of the anterior end. A small greenish stigma lies near the flagellar insertions. A contractile vacuole is present. The cells frequently flee their stalks to swim free. Some empty tubes are seen here. Collected from an ephemeral freshwater pool near Boise, Idaho November 2004. Previously reported only from England and France.DIC.
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Anthophysa (ann-though-fie-sa) is a colonial heterotrophic stramenopile (chrysophyte). Normally ball-shaped aggregates of cells are borne at the ends of brown stalks of an irregularly branching tree-like colony. In this case, the cells have broken away from the stalk. Phase contrast.
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Anthophysa (ann-though-fie-sa) is a colonial heterotrophic stramenopile (chrysophyte). Ball-shaped aggregates of cells are borne at the ends of brown stalks of an irregularly branching tree-like colony. Phase contrast.
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Anthophysa (ann-though-fie-sa) is a colonial heterotrophic stramenopile (chrysophyte). Normally ball-shaped aggregates of cells are borne at the ends of brown stalks of an irregularly branching tree-like colony. In this case, the cells have broken away from the stalk. Phase contrast.
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Anthophysa (ann-though-fie-sa) is a colonial heterotrophic stramenopile (chrysophyte). Ball-shaped aggregates of cells are borne at the ends of brown stalks of an irregularly branching tree-like colony. Phase contrast.
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Anthophysa vegetans (Muller) Stein, 1878. Cells are wide at the anterior and at one side of the anterior end is a site where food is taken in, and the two flagella (one longer one shorter) insert to the side of this. The posterior tip of the cell extendS into a fine protoplasmic filament of variable length and many cells are usually united at their bases into spherical or hemispherical colonies, and these may either be free-swimming or attached to the substrate by means of a stalk which is coloured brown and is often branched. The stalk nearest the cells is usually narrower and transparent, becoming thickened distally by the deposition of iron and manganese compounds, bacteria are embedded in it throughout its length and can be seen clearly close to the colony.
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Anthophysa vegetans.
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Brightfield portrait of the colourless chrysophyte, Anthophysa, from a freshwater pond near Boise, Idaho.
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Anthophysa vegetans is a colonial stramenopile, which lives in all shaped colonies at the end of irregular sometimes branching mucoid stalks that become brown with age. Common in sites with high organic loading. Common in Lake Donghu. Phase contrast optics.
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Anthophysa vegetans is a colonial stramenopile, which lives in all shaped colonies at the end of irregular sometimes branching mucoid stalks that become brown with age. Common in sites with high organic loading. Common in Lake Donghu. Phase contrast optics.
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Anthophysa vegetans is a colonial stramenopile, which lives in all shaped colonies at the end of irregular sometimes branching mucoid stalks that become brown with age. Common in sites with high organic loading. Common in Lake Donghu. This is a massive aggregate of colonies. Dark ground optics.