Huisvennen Closterium
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- Closterium abruptum
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- Cl. acutum var. acutum
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- Cl. acutum var. acutum
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- Cl. acutum var. acutum
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- Closterium cynthia
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- Closterium cynthia
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- Closterium directum
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- Closterium directum
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- Closterium directum
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- Closterium directum
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- Cl. navicula var. navicula
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- Closterium parvulum var. parvulum
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- Closterium setacum
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- Closterium setacum
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- Closterium setacum
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- Cl. striolatum
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- Closterium striolatum
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- Cl. turgidum var. turgidum