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"WardsSci000216"
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Stigeoclonium
Freshwater. Filamentous. Produces zoospores. Basic culture solution.
Characterized by green plastids and cell walls composed of cellulose.
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Ward's® Thalassiosira
Marine. Unicellular; brackish, centric cells. Marine medium.
Characterized by shells (tests) made of silica, in two parts.
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Polysiphonia
Marine. Filamentous; polysiphonious construction. Collected.
Characterized by reddish plastids (rhodoplasts).
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Ward's® Phacus
Freshwater. Unicellular; heart-shaped cell. Soil-water medium.
Characterized by a lack of rigid cellulosic walls, instead these organisms have pellicles made of protein. They store paramylon instead of starch.
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Microspora
Freshwater. Filamentous; H-shaped cell walls. Soil-water medium.
Characterized by green plastids and cell walls composed of cellulose.
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Fritschiella
Freshwater. Filamentous; displays high degree of differentiation. Basic culture solution.
Characterized by green plastids and cell walls composed of cellulose.
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Zygnema
Freshwater. Filamentous; two stellate chloroplasts per cell. Basic culture solution.
Characterized by green plastids and cell walls composed of cellulose.
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Ward's® Ulva
Marine, Macroalga, Multicellular; membranous thallus. Collected. Characterized by green plastids and cell walls composed of cellulose.
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Ward's® Peridinium
Freshwater. Unicellular. Soil-water medium. Characterized by two flagella (one inside a groove at right angles to the other); most also have tests made of cellulose and are encrusted with silica.
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Ward's® Live Chlorella pyrenoidosa Culture
This species of freshwater algae is commonly used for research on photosynthesis.