Diatoms of North AmericaDiatoms of North America
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Compare Gomphosphenia stoermeri

Kociolek and E.W.Thomas 2009

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Gomphosphenia tackei has slightly wider-spaced striae around the central area and a slightly smaller central area. Gomphosphenia americana has a wide, bluntly to broadly rounded head pole. Gomphosphenia praegnans is broadly lanceolate-clavate with an inflated middle and rostrate head and foot poles.

LM scalebar = 10 µm
Gomphosphenia Tackei Var Brevistriatum 100X M Gc53756 Gomphosphenia Tackei Var Brevistriatum 100X R Gc53756 Gomphosphenia Tackei Var Brevistriatum 100X Bb Gc53756 Gomphosphenia Tackei Var Brevistriatum 100X K Gc53756 Gomphosphenia Tackei Var Brevistriatum 100X B2 Gc53756 Gomphosphenia Tackei Var Brevistriatum 100X A2 Gc53756 Gomphosphenia Tackei Var Brevistriatum 100X B5 Gc53756
Length Range
10.0-22.5 µm
Width Range
1.9-2.7 µm
Striae in 10 µm
27-30

Also compare to

Gomphosphenia tackei

(Hust.) Lange-Bert.

Gomphosphenia americana

Kociolek and E.W.Thomas

Gomphosphenia praegnans

Ress, E.W.Thomas and Kociolek