Compare

Staurosirella pinnata has elliptic and wider valves with shorter lengths. Staurosira construens var. venter has lanceolate valves with acute apices, higher striae density, and a wide axial area. Pseudostaurosira elliptica and P. brevistriata both have a higher stria densities and broad, lanceolate axial areas. Staurosirella ansata has clavate and wider valves with stria that are radiate (Hohn and Hellerman 1963).

LM scalebar = 10 µm
Staurosirella berolinensis LM1 Staurosirella berolinensis LM3 Staurosirella berolinensis LM4 Staurosirella berolinensis LM5 Staurosirella berolinensis LM6 Staurosirella berolinensis LM7 Staurosirella berolinensis LM8
Length Range
12.2-25.9 µm
Width Range
1.8-2.3 µm
Striae in 10 µm
11-12

Staurosirella pinnata

(Ehrenb.) D.M.Williams and Round 1987

Staurosirella pinnata LM2 Staurosirella pinnata LM1 Staurosirella pinnata LM3 Staurosirella pinnata LM4 Staurosirella pinnata LM5
Length Range
4-10 µm
Width Range
3-4 µm
Striae in 10 µm
11-14

Staurosira construens var. venter

(Ehrenb.) Hamilton 1992

Staurosira construens var venter LM3 Staurosira construens var venter LM1 Staurosira construens var venter LM5 Staurosira construens var venter LM2 Staurosira construens var venter LM4
Length Range
5-26 µm
Width Range
4-5.5 µm
Striae in 10 µm
12-16

Pseudostaurosira elliptica

(Schum.) Edlund, E.Morales and S.A.Spauld. 2006

Pseudostaurosira elliptica LM5 Pseudostaurosira elliptica LM1 Pseudostaurosira elliptica LM3 Pseudostaurosira elliptica LM2 Pseudostaurosira elliptica LM6 Pseudostaurosira elliptica LM4
Length Range
6-14 µm
Width Range
3-3.5 µm
Striae in 10 µm
14-16

Pseudostaurosira brevistriata

(Grunow) D.M.Williams and Round 1987

Pseudostaurosira brevistriata LM3 Pseudostaurosira brevistriata LM4 Pseudostaurosira brevistriata LM1 Pseudostaurosira brevistriata LM2 Pseudostaurosira brevistriata LM5
Length Range
10-26 µm
Width Range
3.5-4 µm
Striae in 10 µm
12-15

Also compare to

Staurosirella ansata

(M.H.Hohn and Hellerman) J.C.Kingston