Diatoms of North AmericaDiatoms of North America
Return to overview

Compare Tetracyclus hinziae

Bishop and Spaulding 2015

Compare

Tetracyclus hinziae is easily confused with Odontidium mesodon, especially at the smaller end of the size range. Tetracyclus hinziae has septa, while O. mesodon does not. In addition, T. hinziae is more heavily silicified and the ends are more apiculate than in O. mesodon. Girdle bands of T. hinziae are more linear than convex as in O. mesodon. Tetracyclus glans has a large, distinct central inflation.

LM scalebar = 10 µm
Tetracyclus hinziae LM3 Tetracyclus hinziae LM1 Tetracyclus hinziae LM6 Tetracyclus hinziae LM7 Tetracyclus hinziae LM2 Tetracyclus hinziae LM4 Tetracyclus hinziae LM5
Length Range
8.2-35.5 µm
Width Range
5.6-14.0 µm
Striae in 10 µm
20-27

Odontidium mesodon

(Ehrenb.) Kütz. 1844

Odontidium mesodon LM7 Odontidium mesodon LM2 Odontidium mesodon LM6 Odontidium mesodon LM4 Odontidium mesodon LM3 Odontidium mesodon LM1 Odontidium mesodon LM5
Length Range
10–40 µm
Width Range
6–12 µm
Striae in 10 µm
25-35

Tetracyclus glans

(Ehrenberg) Mills 1935

Iwb 0030 1 Tetracyclus Glans 001 Girdle Band Cropped Small Iwb 0026 1 Tglans 009 Cropped Adjusted Small Iwb 0026 1 Tglans 004 Cropped Adjusted Small Iwb 0026 1 Tglans 005 Cropped Adjusted Small Cas 183038 07282014 051 Adj Cropped Small Cas 183038 07282014 028 Test
Length Range
19.4-37.5 µm
Width Range
13-21 µm
Striae in 10 µm
21-23

Tetracyclus rupestris

(Braun ex Rabenh.) Grunow in Van Heurck 1885

Tetracyclus rupestris LM4 Tetracyclus rupestris LM1 Tetracyclus rupestris LM6 Tetracyclus rupestris LM2 Tetracyclus rupestris LM7 Tetracyclus rupestris LM3 Tetracyclus rupestris LM5
Length Range
8.0-22.4 µm
Width Range
4.7-8.4 µm
Striae in 10 µm
24-28