Compare

The morphology of E. paludosa is similar to E. trinacria. Valves of E. trinacria are narrower and have a central undulation on the dorsal margin that is absent in E. paludosa. Valves of E. paludosa are sometimes confused with forms of E. exigua and E. tenella. The apices of E. paludosa are narrowly protracted and are not as strongly dorsally recurved as the capitate, dorsally recurved apices of E. exigua. Valves of E. paludosa have a more evenly curved dorsal margin and a more convex ventral margin than valves of E. tenella, where the dorsal and ventral margins are nearly parallel. The dorsal margin ends in a ‘shoulder’ near the apices and the ventral margin is straighter in E. tenella.

LM scalebar = 10 µm
Eunotia Paludosa Initialvalve C Eunotia Paludosa Long C Eunotia Paludosa Mid Ic Eunotia Paludosa Mid Iic Eunotia Paludosa Mid Iiic Eunotia Paludosa Short C Eunotia Paludosa Girdle C
Length Range
14.5-47.5 µm
Width Range
2.2-3.7 µm
Striae in 10 µm
18-22 in the center valve

Eunotia trinacria

Krasske 1929

Eunotia trinacria LM5 Eunotia trinacria LM6 Eunotia trinacria LM7 Eunotia trinacria LM1 Eunotia trinacria LM4 Eunotia trinacria LM2 Eunotia trinacria LM3
Length Range
8-24 µm
Width Range
1.7-2.6 µm
Striae in 10 µm
17-23 in the center valve

Eunotia exigua

(Bréb. in Kütz.) Rabenh. 1864

Eunotia exigua LM5 Eunotia exigua LM6 Eunotia exigua LM4 Eunotia Smokies 1 Eunotia exigua LM3 Eunotia exigua LM2 Eunotia exigua LM1
Length Range
7.5-22 µm
Width Range
1.8-3.2 µm
Striae in 10 µm
16-24 in the center, 20-24 at the ends

Eunotia tenella

(Grunow) Hust. in A.Schmidt et al. 1913

Eunotial tenella LM7 Eunotial tenella LM2 Eunotial tenella LM6 Eunotial tenella LM5 Eunotial tenella LM1 Eunotial tenella LM4 Eunotial tenella LM3
Length Range
11-33 µm
Width Range
2.6-3.7 µm
Striae in 10 µm
16-22