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Diploneis ovalis has generally broader valves and a higher striae and areolae density. Diploneis krammeri has elliptic to linear-elliptic valves with broadly rounded ends and smaller central area, 3.8-4.5 µm wide. Diploneis elliptica has less extended central area and coarser striae and areolae.

LM scalebar = 10 µm
Diploneis mollenhaueri LM1 Diploneis mollenhaueri LM2 Diploneis mollenhaueri LM3
Length Range
46-60 µm
Width Range
20-21.5 µm
Striae in 10 µm
12-13

Diploneis ovalis

(Hilse) Cleve 1891

Diploneis Ovalis 1 Diploneis Ovalis 2 Diploneis Ovalis 3 Diploneis Ovalis 4 Diploneis Ovalis 5 Diploneis Ovalis 6 Diploneis Ovalis 7
Length Range
32.5-58.7 µm
Width Range
20.7-32.6 µm
Striae in 10 µm
12-14

Diploneis krammeri

Lange-Bert. and E.Reichardt in Rumrich et al. 2000

Diploneis krammeri LM4 Diploneis krammeri LM5 Diploneis krammeri LM6
Length Range
31-49 µm
Width Range
15-16 µm
Striae in 10 µm
11-12

Diploneis elliptica

(Kütz.) Cleve 1894

Diploneis elliptica LM1 Dielliptica 1 Dielliptica 2 Dielliptica 3 Dielliptica 4 Dielliptica 5
Length Range
30-65 µm
Width Range
17-36 µm
Striae in 10 µm
9-10

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