Compare

Luticola arctica has more linear margins, capitate apices, and a larger central area. Luticola cohnii is larger and wider. Smaller specimens of L. mutica and L. arctica may be difficult to distinguish.

LM scalebar = 10 µm
Luticola Arctica Gc63412 7 Luticola Arctica Gc63412 3 Luticola Arctica Gc63412 12 Luticola Arctica Gc63412 1 Luticola Arctica Gc63412 6 Luticola Arctica Gc63412 16 Luticola Arctica Gc63412 19
Length Range
9-27 µm
Width Range
5.5-7.3 µm
Striae in 10 µm
15-18

Also compare to

Luticola mutica

(Kütz.) D.G.Mann

BioData Reference
Krammer and Lange-Bertalot 2/1 Pl 61 Fig 1-7

Luticola cohnii

(Hilse) D.G.Mann