Compare Cymbella affinis
Compare
Cymbella affinis differs from C. excisiformis by wider valves and less distinct areolae. Cymbella affiniformis has narrower apices and a higher areola density (26-30 in 10 µm).
LM scalebar = 10 µm
Length Range
19-36 µm
19-36 µm
Width Range
6.9-9.0 µm
6.9-9.0 µm
Striae in 10 µm
9-12 in the center valve, 13-14 at the ends
9-12 in the center valve, 13-14 at the ends
Cymbella excisiformis
Length Range
24-34 µm
24-34 µm
Width Range
6.1-7.1 µm
6.1-7.1 µm
Striae in 10 µm
9-11 in the center valve, 12-16 at the ends
9-11 in the center valve, 12-16 at the ends
Cymbella affiniformis
Length Range
22.9-33.0 µm
22.9-33.0 µm
Width Range
7.2-9.2 µm
7.2-9.2 µm
Striae in 10 µm
10-12 dorsal, 11-13 ventral near valve center
10-12 dorsal, 11-13 ventral near valve center