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Diatoms of North America
Practitioners
Morphology
Centric
Araphid
Eunotioid
Symmetric Biraphid
Monoraphid
Asymmetric Biraphid
Epithemioid
Nitzschioid
Surirelloid
Genera
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Glossary
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What are diatoms?
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Images of
Pleurosigma
delicatulum
W.Sm. 1852
Type Specimen
Slide Number
Reimer Herbarium L-2-57
Site ID
L-2-57 Excelsior Fen – Dugout Creek
Site Name
Excelsior Fen at Dugout Creek, Dickinson County, Iowa
Coordinates
43.409008, -95.309088
Notes
Sample collected by J. Koppen, Image: Lane Allen
Scalebar = 10 µm
Slide Number
Iowa Lakeside Lab 2019-91
Site ID
ILL 2019-91
Site Name
Tackle Box boat ramp, Lake Granbury, Texas
Coordinates
32.405643, -97.756646
Notes
Image: Lane Allen
Scalebar = 10 µm
Slide Number
Iowa Lakeside Lab 2019-91
Site ID
ILL 2019-91
Site Name
Tackle Box boat ramp, Lake Granbury, Texas
Coordinates
32.405643, -97.756646
Notes
Image: Lane Allen
Scalebar = 10 µm
Slide Number
Iowa Lakeside Lab 2019-91
Site ID
ILL 2019-91
Site Name
Tackle Box boat ramp, Lake Granbury, Texas
Coordinates
32.405643, -97.756646
Notes
Image: Lane Allen
Scalebar = 10 µm
Slide Number
Iowa Lakeside Lab 2019-91
Site ID
ILL 2019-91
Site Name
Tackle Box boat ramp, Lake Granbury, Texas
Coordinates
32.405643, -97.756646
Notes
Image: Lane Allen
Scalebar = 10 µm
Slide Number
Iowa Lakeside Lab 2019-91
Site ID
ILL 2019-91
Site Name
Tackle Box boat ramp, Lake Granbury, Texas
Coordinates
32.405643, -97.756646
Notes
Image: Lane Allen
Scalebar = 10 µm
Site ID
Iowa Lakeside Lab 2019-91
Name
Lake Granbury, Hood County, Texas
Coordinates
32.405639, -97.756641
Caption
Internal view of fragment, note helictoglossa at apex
Notes
SEM credit: Beth Caissie
Scalebar = 10 µm
Site ID
Iowa Lakeside Lab 2019-91
Name
Lake Granbury, Hood County, Texas
Coordinates
32.405639, -97.756641
Caption
Internal view, close up of apex, note velum in areolae.
Notes
SEM credit: Beth Caissie
Scalebar = 2 µm