Compare Diatoma ehrenbergii
Diatoma ehrenbergii distinguished from D. vulgaris, D. tenuis and D. moniliformis primarily by valve outline. Diatoma vulgaris has elliptic to elliptic-lanceolate valves. Diatoma tenuis has more narrow valves (width 2.9-4.9 µm), although small valves of D. ehrenbergii are wider than small valves of D. tenuis. Diatoma moniliformis is smaller in range of length and width, and has rounded to rostrate apices.
LM scalebar = 10 µm
Length Range
31-121 µm
31-121 µm
Width Range
4.5-9.3 µm
4.5-9.3 µm
Striae in 10 µm
35-40
35-40
Length Range
15-60 µm
15-60 µm
Width Range
8–12 µm
8–12 µm
Striae in 10 µm
50-60
50-60
Length Range
20-85 µm
20-85 µm
Width Range
2.9-4.9 µm
2.9-4.9 µm
Striae in 10 µm
45-60
45-60
Length Range
10–40 µm
10–40 µm
Width Range
2.5-6.0 µm
2.5-6.0 µm
Striae in 10 µm
50-60
50-60
