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Kurtkrammeria weilandii may be distinguished from other species of Kurtkrammeria by the size and shape of the valve, spacing of the median striae, and the presence or absence of a stigma. Kurtkrammeria weilandii and other species of Kurtkrammeria have striae that are convergent at the apices. In Encyonopsis, striae are always radiate or parallel at the apices. Some species of Kurtkrammeria have a stigma; a stigma is never present in Encyonopsis. Valves of Gomphonema species are asymmetric to the transapical axis, with a head pole and a foot pole, and symmetric to the apical axis. In Kurtkrammeria, valves are asymmetric to the apical axis and symmetric to the transapical axis. If present, apical pore fields of Kurtkrammeria species are located at both poles, not just the foot pole as in Gomphonema species,

LM scalebar = 10 µm
Kurtkrammeria weilandii LM4 Kurtkrammeria weilandii LM5  Kurtkrammeria weilandii LM7 Kurtkrammeria weilandii LM6 Kurtkrammeria weilandii LM3 Kurtkrammeria weilandii LM1 Kurtkrammeria weilandii LM2
Length Range
33.0-72.0 µm
Width Range
7.5-9.7 µm
Striae in 10 µm
12-14 at the valve center, 15-18 near the apices

Kurtkrammeria aequalis

(W.Sm.) Krammer 1997

Encyonopsisaequaliformis1 Encyonopsisaequaliformis2 Encyonopsisaequaliformis3 Encyonopsisaequaliformis4 Encyonopsisaequaliformis5 Encyonopsisaequaliformis6 Encyonopsisaequaliformis7
Length Range
22-41 µm
Width Range
5.6-7.6 µm
Striae in 10 µm
12-16 at the valve center, 18-20 near the ends

Kurtkrammeria lacusglacialis

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

Encyonadaensis 1 Encyonadaensis 3 Encyonadaensis 4 Encyonadaensis 5 Encyonadaensis 6
Length Range
58-80 µm
Width Range
8.8-11.1 µm
Striae in 10 µm
10-13 at the valve center, 16-18 near the ends

Kurtkrammeria neoamphioxys

(Krammer) L.L.Bahls 2015

Encyonopsis Neoamphioxys 1 Encyonopsis Neoamphioxys 2 Encyonopsis Neoamphioxys 4 Encyonopsis Neoamphioxys 5 Encyonopsis Neoamphioxys 6
Length Range
41-59 µm
Width Range
4.9-7.6 µm
Striae in 10 µm
13-15 at the valve center, 15-18 at the ends on the dorsal side

Kurtkrammeria stodderi

(Cleve) L.L.Bahls 2015

Encyonopsis Stodderi 1 Encyonopsis Stodderi 2 Encyonopsis Stodderi 3 Encyonopsis Stodderi 4 Encyonopsis Stodderi 5 Encyonopsis Stodderi 6 Encyonopsis Stodderi 7
Length Range
53-68 µm
Width Range
9.2-11.2 µm
Striae in 10 µm
9-11 at valve center, 11-13 at the ends (dorsal side)

Kurtkrammeria subspicula

Krammer 1997

Encyonopsis Subspicula1 Encyonopsis Subspicula2 Encyonopsis Subspicula3 Encyonopsis Subspicula4 Encyonopsis Subspicula5 Encyonopsis Subspicula6
Length Range
47.2-76.4 µm
Width Range
5.7-8.6 µm
Striae in 10 µm
16-20

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

Also compare to

Gomphonema gracile

Ehrenb.