Compare

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

Diatoms of North America relies on the financial support of our user community. We aim to build our technical content by engaging diatomists at all levels and training the next generation. We need you to reach our 2025 fundraising goal of $25,000.

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