Diatoms of North AmericaDiatoms of North America
Return to overview

Compare Pinnularia grunowii

Krammer 2000

Compare

Pinnularia pluvianiformis has smaller valves.

Pinnularia bigibba lacks a central inflation.

Pinnularia turbulenta has a central inflation that is similar in width to the distal inflation, a broader fascia, and wider apices.

Pinnularia angusta has narrower valves.

LM scalebar = 10 µm
Pinnularia grunowii LM7 Pinnularia grunowii LM6 Pinnularia grunowii LM4 Pinnularia grunowii LM5 Pinnularia grunowii LM1 Pinnularia grunowii LM2 Pinnularia grunowii LM3
Length Range
38.2-46.4 µm
Width Range
8.1-9.3 µm
Striae in 10 µm
11-12

Pinnularia pluvianiformis

Krammer 2000

Pinnularia pluvianiformis LM3 Pinnularia pluvianiformis LM6 Pinnularia pluvianiformis LM2 Pinnularia pluvianiformis LM4 Pinnularia pluvianiformis LM1 Pinnularia pluvianiformis LM7 Pinnularia pluvianiformis LM5
Length Range
24-28 µm
Width Range
5.6-5.9 µm
Striae in 10 µm
13-14

Pinnularia bigibba

E.E.Gaiser and J.Johansen 2000

Pinnularia bigibba LM3 Pinnularia bigibba LM4 Pinnularia bigibba LM2 Pinnularia bigibba LM5 Pinnularia bigibba LM1
Length Range
36-38 µm
Width Range
5.4-5.6 µm
Striae in 10 µm
11

Also compare to

Pinnularia turbulenta

(Cleve-Euler) Krammer

Pinnularia angusta

(Cleve) Krammer