Compare Caloneis lewisii
Compare
Caloneis lewisii can be distinguished from C. lewisii var. inflata by the rounded, cuneate apices of the nominate variety. In contrast, the apices of C. lewisii var. inflata are rostrate. The central margin of C. ventricosa is not as distinctly expanded as in C. lewisii.
LM scalebar = 10 µm
Length Range
25.0-42.0 µm
25.0-42.0 µm
Width Range
11.5-13.5 at center of valve, 6.5-10 near the apices µm
11.5-13.5 at center of valve, 6.5-10 near the apices µm
Striae in 10 µm
19-22
19-22