Diatoms of North AmericaDiatoms of North America
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Compare Surirella crumena

Bréb. ex Kütz. 1849

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Surirella crumena is distinguished from other medium to large Surirella species by its nearly circular valve outline, broadly rounded poles, and lack of an axial area and transverse ribs.

LM scalebar = 10 µm
Surirella crumena LM7 Surirella crumena LM5 Surirella crumena LM4 Surirella crumena LM2 Surirella crumena LM1
Length Range
44.9-84.8 µm
Width Range
39.2-70.0 µm
Striae in 10 µm
13-19

Surirella brebissonii

Krammer and Lange-Bert. 1987

Gc112761A Brebissonii 9 Gc112761A Brebissonii 10 Gc112761A Brebissonii 4 Gc112761A Brebissonii 3 Gc112761A Brebissonii 8 Gc109819B Brebissonii 3 Gc112761A Brebissonii 7
Length Range
15.5-56 µm
Width Range
10-25 µm
Striae in 10 µm
18-23

Surirella iowensis

R.L.Lowe 1973

Surirella iowensis LM7 Surirella iowensis LM6 Surirella iowensis LM4 Surirella iowensis LM2 Surirella iowensis LM3 Surirella iowensis LM1 Surirella iowensis LM5
Length Range
21-54 µm
Width Range
15-33 µm
Striae in 10 µm
16-26

Surirella ovalis

Bréb. 1838

Gc109807B Ovalis 6 Gc106518B Ovalis 3 Gc109807B Ovalis 5 Gc109807B Ovalis 4 Gc106518B Ovalis 1 Gc109807B Ovalis 2 Gc109807B Ovalis 3
Length Range
14-75 µm
Width Range
11-35 µm
Striae in 10 µm
14-17