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Diatoms of North America
Practitioners
Morphology
Centric
Araphid
Eunotioid
Symmetric Biraphid
Monoraphid
Asymmetric Biraphid
Epithemioid
Nitzschioid
Surirelloid
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What are diatoms?
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Images of
Meridion
circulare var. constrictum
(Ralfs) Brun 1880
Type Specimen
Slide Number
Iowa Lakeside Lab Reimer Herbarium L-1-75
Site ID
Iowa Lakeside Lab Reimer Herbarium L-1-75
Site Name
Kalsow Prairie, drainage area; soil sample
Coordinates
41.878003, -93.097702
Scalebar = 10 µm
Slide Number
Iowa Lakeside Lab ILL2013-333
Site ID
Iowa Lakeside Lab ILL2013-33
Site Name
Iowa Lakeside Lab prairie stream
Coordinates
43.38301, -95.17847
Scalebar = 10 µm
Slide Number
Iowa Lakeside Lab ILL2013-33
Site ID
Iowa Lakeside Lab ILL2013-33
Site Name
Iowa Lakeside Lab prairie stream
Coordinates
43.38301, -95.17847
Caption
Girdle view
Scalebar = 10 µm
Slide Number
Iowa Lakeside Lab ILL2013-33
Site ID
Iowa Lakeside Lab ILL2013-33
Site Name
Iowa Lakeside Lab prairie stream
Coordinates
43.38301, -95.17847
Caption
Girdle view, showing two frustules with internal valves
Scalebar = 10 µm
Slide Number
Iowa Lakeside Lab ILL2013-33
Site ID
Iowa Lakeside Lab ILL2013-33
Site Name
Iowa Lakeside Lab prairie stream
Coordinates
43.38301, -95.17847
Scalebar = 10 µm
Site ID
INSTAAR Diatom Collection 15559 BDB-000053483
Name
Cellar Creek at Route 610 near Spainville, VA
Coordinates
37.2028, -77.9708
Notes
Credit: Ian Bishop
Scalebar = 30 µm