Encyonema lunatum and E. paucistriatum have bluntly rounded apices and a lower stria density.

Encyonema pergracile has wider valves, up to 9.2 µm.

LM scalebar = 10 µm
Length Range
18.7-41.3 µm
Width Range
5.5-6.7 µm
Striae in 10 µm
12-15
Encyonema neogracile LM1
Encyonema neogracile LM2
Encyonema neogracile LM3
Encyonema neogracile LM4
Encyonema neogracile LM5
Encyonema neogracile LM6
Encyonema neogracile LM1 Encyonema neogracile LM2 Encyonema neogracile LM3 Encyonema neogracile LM4 Encyonema neogracile LM5 Encyonema neogracile LM6

Encyonema lunatum

(W.Sm.) Van Heurck 1880

Length Range
27.3-40.7 µm
Width Range
4.3-5.3 µm
Striae in 10 µm
9-14
Encyonema lunatum LM1 Encyonema lunatum LM2 Encyonema lunatum LM3 Encyonema lunatum LM4 Encyonema lunatum LM5 Encyonema lunatum LM6

Encyonema pergracile

Krammer 1997

Length Range
32-48 µm
Width Range
6.5-7.8 µm
Striae in 10 µm
11-13
Encyonema pergracile LM1 Encyonema pergracile LM2 Encyonema pergracile LM3 Encyonema pergracile LM4 Encyonema pergracile LM5

Encyonema paucistriatum

(A.Cleve) D.G.Mann 1990

Length Range
25.0-38.8 µm
Width Range
4.9-6.1 µm
Striae in 10 µm
8-11
Encyonema paucistriatum LM1 Encyonema paucistriatum LM2 Encyonema paucistriatum LM4 Encyonema paucistriatum LM3 Encyonema paucistriatum LM5 Encyonema paucistriatum LM6 Encyonema paucistriatum LM7