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Diatoms of North America
Practitioners
Morphology
Centric
Araphid
Eunotioid
Symmetric Biraphid
Monoraphid
Asymmetric Biraphid
Epithemioid
Nitzschioid
Surirelloid
Genera
Species
Glossary
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Projects
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What are diatoms?
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Return to overview
Images of
Asterionella
formosa
Hassall 1850
Type Specimen
Slide Number
Reimer Herbarium, Iowa Lakeside Lab ILL 2011-12
Scalebar = 10 µm
Slide Number
Reimer Herbarium, Iowa Lakeside Lab ILL 2011-12
Scalebar = 10 µm
Slide Number
Reimer Herbarium, Iowa Lakeside Lab ILL 2011-12
Scalebar = 10 µm
Slide Number
Reimer Herbarium, Iowa Lakeside Lab ILL 2011-12
Scalebar = 10 µm
Slide Number
Reimer Herbarium, Iowa Lakeside Lab ILL 2011-12
Scalebar = 10 µm
Slide Number
Reimer Herbarium, Iowa Lakeside Lab ILL 2011-12
Scalebar = 10 µm
Site ID
INSTAAR DIATOM Collection 13391
Name
Sediment 5.5 cm core depth, Holly Lake, Grand Teton National Park
Coordinates
43.7927, -110.7980
Caption
External view, mid section of valve
Notes
Marginal spines are widely spaced from one another
Scalebar = 3 µm
Site ID
INSTAAR DIATOM Collection 13391
Name
Sediment 5.5 cm core depth, Holly Lake, Grand Teton National Park
Coordinates
43.7927, -110.7980
Caption
External view, headpole
Notes
Note apical pore field. external opening of rimoportula, marginal spines
Scalebar = 3 µm