Diatoms of North AmericaDiatoms of North America
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Compare Craticula citrus

(Krasske) Reichardt 1997

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Craticula accomoda has smaller, more narrow valves and the striae are uninterrupted. Navicula gregaria may co-occur with C. citrus, but it is much larger in length, has lineate striae and has a distinct central area.

LM scalebar = 10 µm
Gc113557A 011 Gc113557A 016 Gc113557A 022 Gc111557A 01 Gc113557A 07 Gc113557A 06 Gc113557A 024
Length Range
13.1-16.6 µm
Width Range
4.6-5.8 µm
Striae in 10 µm
18-24

Craticula accomoda

(Hust.) D.G.Mann in Round, R.M.Crawford and D.G.Mann 1990

Craticula accomoda LM6 Craticula accomoda LM4 Craticula accomoda LM3 Craticula accomoda LM7 Craticula accomoda LM2 Craticula accomoda LM5 Craticula accomoda LM1
Length Range
19.0-20.3 µm
Width Range
4.8-6.4 µm
Striae in 10 µm
20-26

Navicula gregaria

Donkin 1861

Navicula gregaria LM4 Navicula gregaria LM5 Navicula gregaria LM3 Navicula gregaria LM7 Navicula gregaria LM6 Navicula gregaria LM2 Navicula gregaria LM1
Length Range
16-35 µm
Width Range
4.1-7.0 µm
Striae in 10 µm
14-18 in the center valve