Diatoms of North AmericaDiatoms of North America
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Compare Navicula flatheadensis

Bahls 2011

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Navicula subconcentrica has smaller valves with narrower, acutely rounded to subcapitate apices. The proximal raphe ends of N. subconcentrica are straight and relatively close together and the central nodule is typically symmetric and straight. Navicula pseudolanceolata has smaller valves with non-protracted apices, radiate or parallel terminal striae, and somewhat coarser areolae.

LM scalebar = 10 µm
Navicula flatheadensis LM6 Navicula flatheadensis LM5 Navicula flatheadensis LM4 Navicula flatheadensis LM3 Navicula flatheadensis LM2 Navicula flatheadensis LM1
Length Range
45-75 µm
Width Range
10.3-13.5 µm
Striae in 10 µm
10-12

Navicula subconcentrica

Lange-Bert. 2001

Navicula subconcentrica LM7 Navicula subconcentrica LM6 Navicula subconcentrica LM5 Navicula subconcentrica LM4 Navicula subconcentrica LM3 Navicula subconcentrica LM2 Navicula subconcentrica LM1
Length Range
36-58 µm
Width Range
8.5-10.6 µm
Striae in 10 µm
10-12

Navicula pseudolanceolata

Lange-Bert. 1980

Navicula pseudolanceolata LM7 Navicula pseudolanceolata LM6 Navicula pseudolanceolata LM5 Navicula pseudolanceolata LM4 Navicula pseudolanceolata LM3 Navicula pseudolanceolata LM2 Navicula pseudolanceolata LM1
Length Range
41-59 µm
Width Range
9.0-11.1 µm
Striae in 10 µm
9-11