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Staurophora columbiana may be distinguished from other Staurophora species by the size and shape of the valves and shape of the central area, or fascia.

LM scalebar = 10 µm
Staurophora columbiana LM3 Staurophora columbiana LM2 Staurophora columbiana LM1 Staurophora columbiana LM4 Staurophora columbiana LM5 Staurophora columbiana LM6 Staurophora columbiana LM7
Length Range
35-54 µm
Width Range
7.9-12.7 µm
Striae in 10 µm
15-20

Staurophora brantii

L.L.Bahls 2012

Staurophora brantii LM7 Staurophora brantii LM6 Staurophora brantii LM5 Staurophora brantii LM4 Staurophora brantii LM3 Staurophora brantii LM2 Staurophora brantii LM1
Length Range
38-48 µm
Width Range
9-12 µm
Striae in 10 µm
18-24 (14 initial valve)

Staurophora soodensis

(Krasske) L.L.Bahls 2013

Staurophora soodensis LM1 Staurophora soodensis LM2 Staurophora soodensis LM7 Staurophora soodensis LM3 Staurophora soodensis LM4 Staurophora soodensis LM5 Staurophora soodensis LM6
Length Range
22-33 µm
Width Range
4.4-8.8 µm
Striae in 10 µm
16 (middle) to 20 (ends)

Staurophora tackei

(Hust.) L.L.Bahls 2012

Staurophora tackei LM6 Staurophora tackei LM5 Staurophora tackei LM4 Staurophora tackei LM3 Staurophora tackei LM2 Staurophora tackei LM1
Length Range
21-30 µm
Width Range
5.7-7.3 µm
Striae in 10 µm
20-30

Staurophora wislouchii

(Poretzky and Anisimova) D.G.Mann 1990

Staurophora wislouchii LM7 Staurophora wislouchii LM6 Staurophora wislouchii LM5 Staurophora wislouchii LM4 Staurophora wislouchii LM3 Staurophora wislouchii LM2 Staurophora wislouchii LM1
Length Range
25-40 µm
Width Range
7.3-11.4 µm
Striae in 10 µm
24-30