Compare Cymbella tropica
Compare
Cymbella tropica differs from C. turgidula and C. subturgidula by having a large elongated stigma, however, note that in a few larger specimens a second stigma may be present. Cymbella tropica differs from C. affinis by, on average, wider valves and lower areola density.
LM scalebar = 10 µm
Length Range
26-42 µm
26-42 µm
Width Range
8.5-12 µm
8.5-12 µm
Striae in 10 µm
9-10 in center valve, 13-14 at apices
9-10 in center valve, 13-14 at apices
Cymbella subturgidula
Length Range
23-57 (inital cells up to 60) µm
23-57 (inital cells up to 60) µm
Width Range
8-13 µm
8-13 µm
Striae in 10 µm
8-11 in the valve center
8-11 in the valve center
Cymbella turgidula
Length Range
27-46 µm
27-46 µm
Width Range
9.5-14 µm
9.5-14 µm
Striae in 10 µm
9-11 dorsal in the center valve, 12-13 at apices
9-11 dorsal in the center valve, 12-13 at apices
Cymbella affinis
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