Compare

Encyonopsis cesatii and E. cesatii var. geitleri have smaller, narrowly lanceolate valves and less strongly radiate striae near the apices. Encyonopsis stafsholtii is smaller and has long attenuated apices and a distinctly notched central area on the ventral side. Encyonopsis treinishii has a central stigma. Encyonopsis cesatiformis has smaller lanceolate valves and less strongly radiate striae near the apices. Cymbopleura lapponica has wider valves, a larger central area, proximal raphe ends that are deflected ventrally and terminal raphe fissures that are curved toward the dorsal margin.

LM scalebar = 10 µm
Encyonopsis Montana 1 Encyonopsis Montana 2 Encyonopsis Montana 3 Encyonopsis Montana 4 Encyonopsis Montana 5
Length Range
37-75 µm
Width Range
7.0-8.8 µm
Striae in 10 µm
19-21 at the valve center, 21-22 near the apices

Encyonopsis cesatii

(Rabenh.) Krammer 1997

Encyocesatii 1 Encyocesatii 2 Encyocesatii 3 Encyocesatii 4 Encyocesatii 5 Encyocesatii 6 Encyocesatii 7
Length Range
22.0-38.8 µm
Width Range
4.6-6.0 µm
Striae in 10 µm
16-19 at the valve center, 21-22 near the apices

Cymbopleura lapponica

(Grunow) Krammer 2003

Cymbopleura lapponica LM1 Cymbopleura lapponica LM2 Cymbopleura lapponica LM3 Cymbopleura lapponica LM4 Cymbopleura lapponica LM5
Length Range
26.6-47.1 µm
Width Range
7.2-9.6 µm
Striae in 10 µm
16-19 at the valve center, 20-22 near the apices

Encyonopsis stafsholtii

L.L.Bahls 2013

Estafsholtii 1 Estafsholtii 2 Estafsholtii 3 Estafsholtii 4 Estafsholtii 5 Estafsholtii 6 Estafsholtii 7
Length Range
24.9-44.7 µm
Width Range
5.1-6.3 µm
Striae in 10 µm
22-25

Kurtkrammeria treinishii

(L.L.Bahls) L.L.Bahls 2015

Encyotreinischii 1 Encyotreinischii 2 Encyotreinischii 3 Encyotreinischii 4 Encyotreinischii 5 Encyotreinischii 6
Length Range
55-80 µm
Width Range
7.6-10.3 µm
Striae in 10 µm
12-15 at valve center, 14-17 near the apices

Encyonopsis cesatiformis

Krammer 1997

Encyonopsis Cesatiformis 1 Encyonopsis Cesatiformis 2 Encyonopsis Cesatiformis 3 Encyonopsis Cesatiformis 4 Encyonopsis Cesatiformis 5 Encyonopsis Cesatiformis 6 Encyonopsis Cesatiformis 7
Length Range
26-43 µm
Width Range
5.4-7.6 µm
Striae in 10 µm
17-19 near the valve center, 19-21 near the ends

Also compare to

Encyonopsis cesatii var. geitleri

Krammer 1997