Compare

Staurophora brantii has rhombic-lanceolate valves with broadly-rounded and slightly protracted apices. Staurophora columbiana has linear-lanceolate valves and a poorly defined central area. Staurophora soodensis amd S. tackei are much smaller. Besides being smaller, S. wislouchii has elliptic-lanceolate valves with distinctly protracted apices.

LM scalebar = 10 µm
Staurophora amphioxys LM1 Staurophora amphioxys LM2 Staurophora amphioxys LM3 Staurophora amphioxys LM4 Staurophora amphioxys LM5 Staurophora amphioxys LM6
Length Range
40.8-67.6 µm
Width Range
12.3-17.5 µm
Striae in 10 µm
13-16

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 columbiana

L.L.Bahls 2013

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 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 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

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