Compare Eunotia zasuminensis
Compare
Asterionella formora and A. ralfsii var. americana are heteropolar. Distrionella incognita has distinct costae. Eunotia croatana has less capitate apices with more dense striae (35-37 in 10 µm, Siver et al. 2006). Eunotia asterionelloides has slightly broader valves, 2.0-2.9 µm, and a lower stria density of 16-21 in 10 µm (Wetzel et al. 2010). Eunotia loboi and E. gomesii have bluntly rounded ends and lower stria density, occurring 18-21 and 17-20 in 10 µm, respectively (Wetzel et al. 2010).
LM scalebar = 10 µm
Length Range
38.4-60 µm
38.4-60 µm
Width Range
1.7-2.5 µm
1.7-2.5 µm
Striae in 10 µm
20-22
20-22
Asterionella ralfsii var. americana
Length Range
104.6-192.2 µm
104.6-192.2 µm
Width Range
1.5 to 2.8 at the valve center µm
1.5 to 2.8 at the valve center µm
Striae in 10 µm
>40
>40
