Compare Eunotia exigua
Compare
Eunotia exigua valves have a more concave ventral margin, and are more distinctly constricted near the apices than E. enishna and E. cataractarum. Eunotia exigua valves are also broader than E. enischna. The shoulders of E. exigua are more steeply sloped than the more gradual shoulder slopes of E. cataractarum. The dorsal margin of E. exigua is not distinctly straight as in E. orthohedra. Valves of E. exigua do not have parallel margins as in E. tenella, and the striae of E. exigua are more dense than in E. tenella. The dorsal margin of E. exigua valves is slightly flattened and is less convex relative to the ventral margin in contrast with the dorsal margin of E. meisteri, which is more or less more rounded and is more strongly convex relative to the ventral margin.
LM scalebar = 10 µm
Length Range
7.5-22 µm
7.5-22 µm
Width Range
1.8-3.2 µm
1.8-3.2 µm
Striae in 10 µm
16-24 in the center, 20-24 at the ends
16-24 in the center, 20-24 at the ends
Eunotia cataractarum
Length Range
11-21 µm
11-21 µm
Width Range
3.1-3.9 µm
3.1-3.9 µm
Striae in 10 µm
15-20 in the center valve, 16-19 at the ends, puncta 44-50
15-20 in the center valve, 16-19 at the ends, puncta 44-50
Eunotia enischna
Length Range
15-19 µm
15-19 µm
Width Range
2.4-2.6 µm
2.4-2.6 µm
Striae in 10 µm
23-24 in the center valve, 24-25 at the ends
23-24 in the center valve, 24-25 at the ends
Eunotia orthohedra
Length Range
12-19 µm
12-19 µm
Width Range
2.7-3.8 µm
2.7-3.8 µm
Striae in 10 µm
16-20 in the valve center, 20-22 at the ends
16-20 in the valve center, 20-22 at the ends
