Compare

Apices of P. microstauron are much narrower than the valves. Pinnularia suchlandtii has linear-lanceolate valves, with undifferentiated apices.

LM scalebar = 10 µm
Pinnularia rhombarea LM7 Pinnularia rhombarea LM6 Pinnularia rhombarea LM5 Pinnularia rhombarea LM4 Pinnularia rhombarea LM3 Pinnularia rhombarea LM2 Pinnularia rhombarea LM1
Length Range
44.9-74.5 µm
Width Range
10.2-12.5 µm
Striae in 10 µm
9-11

Pinnularia microstauron

(Ehrenb.) Cleve 1891

Pinnularia microstauron LM7 Pinnularia microstauron LM6 Pinnularia microstauron LM4 Pinnularia microstauron LM3 Pinnularia microstauron LM2 Pinnularia microstauron LM1
Length Range
27.7-81.3 µm
Width Range
7.2-12.2 µm
Striae in 10 µm
9-11

Pinnularia suchlandtii

Hust. 1943

Pinnularia suchlandtii LM1 Pinnularia suchlandtii LM2 Pinnularia suchlandtii LM7 Pinnularia suchlandtii LM3 Pinnularia suchlandtii LM4 Pinnularia suchlandtii LM5 Pinnularia suchlandtii LM6
Length Range
54.0-75.4 µm
Width Range
11.8-16.7 µm
Striae in 10 µm
10-11

Diatoms of North America is running a fundraising campaign to keep the servers in operation. We need you to reach our $25,000 fundraising goal.

If you use and appreciate DONA, make your DONAtion today.

For the Gift Designation, type "diatom" in the search box and select "Diatom Lab Research Fund". This is the designated fund for diatoms.org.