Diatoms of North AmericaDiatoms of North America
Return to overview

Compare Surirella amphioxys

W.Sm. 1856

Compare

Surirella amphioxys is isopolar with a low keel, which separates it from other Surirella species. Surirella angusta and S. minuta are more narrow (<12µm) and lack large undulations, or porcae, on the valve face. Surirella minuta is heteropolar.

LM scalebar = 10 µm
Gc3778A Amphioxys 1 Gc1610 Amphioxys 4 Gc1610 Amphioxys Interior 1 Gc1610 Amphioxys 2 Gc1610 Amphioxys 7 Gc1610 Amphioxys 3 Gc1610 Amphioxys 5
Length Range
28-48 µm
Width Range
13.5-17 µm
Striae in 10 µm
16-20

Surirella angusta

Kütz. 1844

Surirella angusta LM1 Surirella angusta LM5 Surirella angusta LM3 Surirella angusta LM6 Surirella angusta LM7 Surirella angusta LM2 Surirella angusta LM4
Length Range
15.5-60 µm
Width Range
6.5-12 µm
Striae in 10 µm
23-28

Surirella pinnata

W.Smith 1853

Surirella minuta LM1 Surirella minuta LM5 Surirella minuta LM2 Surirella minuta LM3 Surirella minuta LM6 Surirella minuta LM4 Surirella minuta LM7
Length Range
18-71 µm
Width Range
8.5-14 µm
Striae in 10 µm
25-32