Diatoms of North AmericaDiatoms of North America
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Compare Stauroneis agrestis

J.B.Petersen 1915

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Stauroneis kriegeri, another very small Stauroneis, has a nearly rectangular stauros and less strongly radiate striae. Stauroneis pseudagrestis is larger with more lanceolate valves, lower stria density and proximal raphe ends that are bent in the same direction.

LM scalebar = 10 µm
Stauroneis agrestis LM7 Stauroneis agrestis LM6 Stauroneis agrestis LM5 Stauroneis agrestis LM4 Stauroneis agrestis LM3 Stauroneis agrestis LM2 Stauroneis agrestis LM1
Length Range
23-27 µm
Width Range
4.5-5.5 µm
Striae in 10 µm
about 40

Stauroneis kriegeri

R.M.Patrick 1945

Stauroneis kriegeri LM6 Stauroneis kriegeri LM5 Stauroneis kriegeri LM4 Stauroneis kriegeri LM3 Stauroneis kriegeri LM2 Stauroneis kriegeri LM1
Length Range
19-25 µm
Width Range
4.1-5.5 µm
Striae in 10 µm
26-30

Stauroneis pseudagrestis

Lange-Bert. and Werum 2004

Stauroneis pseudagrestis LM7 Stauroneis pseudagrestis LM6 Stauroneis pseudagrestis LM5 Stauroneis pseudagrestis LM4 Stauroneis pseudagrestis LM3 Stauroneis pseudagrestis LM2 Stauroneis pseudagrestis LM1
Length Range
27-43 µm
Width Range
6.4-9.4 µm
Striae in 10 µm
23-26