The stria density of Encyonema aueri is lower, at 8-10 in 10 µm. The central area of E. thermale is less asymmetric and the valve breadth is greater than in E. norvegicum. Encyonema hebridicum has an arched ventral margin and, usually, a rounded central area.

LM scalebar = 10 µm
Encyonema norvegicum LM7 Encyonema norvegicum LM6 Encyonema norvegicum LM5 Encyonema norvegicum LM4 Encyonema norvegicum LM3 Encyonema norvegicum LM2 Encyonema norvegicum LM1
Length Range
25.0–43.0 µm
Width Range
7.0–8.0 µm
Striae in 10 µm
Dorsal: 12–13 at the center, 14–15 at the ends; ventral: 13–15 at the center, 15–17 at the ends

Encyonema hebridicum

(Gregory) Grunow in Cleve and J.D.Möller 1877

Encyonema hebridicum LM1 Encyonema hebridicum LM2 Encyonema hebridicum LM3 Encyonema hebridicum LM4 Encyonema hebridicum LM5 Encyonema hebridicum LM6
Length Range
29.5-63 µm
Width Range
8-11 µm
Striae in 10 µm
9-10 at the center

Also compare to

Encyonema aueri


Encyonema thermale