Diatoms of North AmericaDiatoms of North America
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Compare Navicula symmetrica

R.M.Patrick 1944

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Navicula symmetrica is smaller than N. escambia. The central area of N. symmetrica is also smaller and more irregular than that of N. escambia. Stria density is higher in N. symmetrica (12-17 in 10 µm) than N. escambia (10-13 in 10 µm). The two species also differ in the number of lineolae per stria at 24-28 and 20-23 in 10 µm, respectively.

LM scalebar = 10 µm
Navicula symmetrica LM2 Navicula symmetrica LM3 Navicula symmetrica LM1 Navicula symmetrica LM6 Navicula symmetrica LM4 Navicula symmetrica LM9
Length Range
24-34.5 µm
Width Range
5-6.5 µm
Striae in 10 µm
12-17

Navicula escambia

(R.M.Patrick) Metzeltin and Lange-Bert. 2007

Navicula escambia LM4 4 Navicula Escambia 103388B 11 Navicula escambia LM2 Navicula escambia LM3 Navicula escambia LM1 6 Navicula Escambia 103388B 15
Length Range
28.1-48.6 µm
Width Range
6.3-9.1 µm
Striae in 10 µm
10-13