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Compare Pinnularia dariana

(A.W.F.Schmidt) F.W.Mills 1934

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Pinnularia mesogongyla valves are more narrow and linear and the raphe is complex.

Pinnularia sibflexuosa is large and has broadly lanceolate valves and axial area. To date, it is known only from fossil material from Mexico.

Pinnularia fossilis is smaller in size and lacks of clear undulations of the valve margins. However, this taxon may be conspecific with P. dariana and requires further examination.

LM scalebar = 10 µm
Pinnularia dariana ANSP Boy N 1 14 3 Pinnularia dariana ANSP NJSS0692 1 Pinnularia dariana ANSP NJSS0609 1 Pinnularia dariana ANSP Boy N 1 14 1 Pinnularia dariana ANSP GC49053b PIN03 Pinnularia dariana ANSP NJSS0798 1 Pinnularia dariana ANSP Boy E 5 19 2
Length Range
170-275 µm
Width Range
35-47 µm
Striae in 10 µm
5-7

Also compare to

Pinnularia mesogongyla

BioData Reference
Hustedt 1930 Fig 602

Pinnularia subflexuosa

Hust.

Pinnularia fossilis

Krammer

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