Diatoms of North AmericaDiatoms of North America
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Compare Navicula tripunctata

(O.F.Müll.) Bory 1822

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Navicula margalithii is most similar to N. tripunctata. N. margalithii, however, possesses a strongly asymmetrical central nodule, a small central area and the lineolate areolae are longer. Navicula recens has shorter and more lanceolate valves and strongly radiate striae. N. geronimensis has asymmetrical central area and central raphe endings sharply bent to the primary side of the valve.

LM scalebar = 10 µm
Navicula tripunctata LM6 Navicula tripunctata LM4 Navicula tripunctata LM8 Navicula tripunctata LM10 Navicula tripunctata LM2 Navicula tripunctata LM12 Navicula tripunctata LM14
Length Range
32-60 µm
Width Range
6–10 µm
Striae in 10 µm
9–12

Navicula recens

Lange-Bert. in Krammer and Lange-Bert. 1985

46649 Lm2 46649 Lm5 46649 Lm4 46649 Lm3 46649 Lm6 46649 Lm1 46649 Lm7
Length Range
17-42 µm
Width Range
5.8-8.2 µm
Striae in 10 µm
11–13

Navicula geronimensis

Potapova in Potapova and Charles 2004

Gs023353 Nageron4 Gs023353 Nageron1 Gs023353 Nageron2 Gs023353 Nageron3
Length Range
46-50 µm
Width Range
8-9 µm
Striae in 10 µm
9-10

Also compare to

Navicula margalithii

Lange-Bert.