This class consists of araphid diatoms. Specimens are organized into orders following Wehr et al. (2015).
Fragilariales
Fragilaria
1. Fragilaria crotonensis

500x
Keweenaw Waterway at MTU
oblique plankton tow
8/12/10
pH 8.6, 26°C, 132 uS
2. Fragilaria crotonensis

800x
Torch Lake at Hubbell boat launch
surface plankton tow
5/20/10
17°C
3. Fragilaria crotonensis

800x
Torch Lake at Lake Linden boat launch
surface plankton tow
9/27/05
18.5°C
4. Fragilaria

800x
Jacobsville old quarry pond
aquatic plant sample
8/7/10
pH 7.6, 17°C, 121 uS
5. Fragilaria capucina

800x
Pilgrim River upstream of US-41
rock scraping
5/24/10
18°C
6. Fragilaria capucina

250x

800x
Dollar Bay from shore
surface plankton tow
6/19/07
19°C
Synedra
1. Synedra capitata

320x

1000x
Dollar Bay from boat
aquatic plant sample
9/26/01
2. Synedra ulna var. contracta

800x
creek south of Calumet
filamentous algae sample
10/3/01
3. Synedra ulna var. contracta

800x
Pilgrim River upstream of US-41
rock scraping
5/24/10
18°C
4. Synedra

800x
same as above
5. Synedra

800x
old Laurium dump creek
filamentous algae sample
7/1/10
pH 7.4, 13°C, 802 uS
6. Synedra

640x
Dollar Bay at marina
aquatic plant sample
5/20/10
20°C
7. Synedra

800x
Jacobsville old quarry pond
aquatic plant sample
8/7/10
pH 7.6, 17°C, 121 uS
8. Synedra

400x
Keweenaw Waterway at MTU
surface plankton tow
11/22/05
6.0°C
Tabellariales
Asterionella
1. Asterionella formosa

400x

800x
MTU settling pond
surface plankton tow
10/16/05
11°C
2. Asterionella formosa

500x
Keweenaw Waterway at MTU
oblique plankton tow
10/16/05
13.5°C
3. Asterionella

800x
Traverse River at Mohawk-Gay Rd
plant detritus sample
5/20/10
18°C
4. Asterionella

800x
same as above
Diatoma
1. Diatoma

800x
Pilgrim River upstream of US-41
rock scraping
5/24/10
18°C
2. Diatoma

800x
same as above
3. Diatoma

800x
same as above
4. Diatoma

500x

800x
same as above
5. Diatoma

800x
same as above
6. Diatoma

800x
same as above
Meridion
1. Meridion circulare

800x
Pilgrim River upstream of US-41
rock scraping
5/10/03
6.5°C
2. Meridion circulare

800x
same as above
3. Meridion circulare

800x
same as above
4. Meridion circulare

800x
Tech Trails creek
plant detritus sample
5/14/03
9.5°C
5. Meridion circulare

400x
same as above
Tabellaria
1. Tabellaria fenestrata

640x

800x
Traverse River at Mohawk-Gay Rd
plant detritus sample
5/20/10
18°C
2. Tabellaria fenestrata

250x

500x
Dollar Bay at marina
plankton tow
8/12/10
pH 8.4, 26°C, 130 uS
3. Tabellaria fenestrata

250x

500x
Jacobsville old quarry pond
aquatic plant sample
8/7/10
pH 7.6, 17°C, 121 uS
4. Tabellaria flocculosa

800x
Dollar Bay at boat launch
plankton tow
5/20/10
20°C
5. Tabellaria flocculosa

800x
Dover Creek pool at US-41
plankton tow
7/15/10
pH 6.8, 25°C, 130 uS
6. Tabellaria flocculosa

640x
Keweenaw Waterway at Lily Pond
oblique plankton tow
8/29/05
15°C