Diatoms of North AmericaDiatoms of North America
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Compare Tryblionella apiculata

W.Greg. 1857

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Tryblionella hungarica has a ratio of nearly 2:1 of fibulae to striae (T. apiculata has a 1:1 ratio) and the central constriction is less apparent.

LM scalebar = 10 µm
Tryblionella apiculata LM4 Tryblionella apiculata LM3 Tryblionella apiculata LM2 Tryblionella apiculata LM1 Tryblionella apiculata LM5
Length Range
32-47 µm
Width Range
5-7 µm
Striae in 10 µm
15-18

Tryblionella hungarica

(Grunow) Freng. 1942

Tryblionella hungarica LM1 Tryblionella hungarica LM5 Tryblionella hungarica LM3 Tryblionella hungarica LM2 Tryblionella hungarica LM4 Tryblionella hungarica LM2 Tryblionella hungarica LM1
Length Range
35-100 µm
Width Range
5-9 µm
Striae in 10 µm
16-19