Diatoms of North AmericaDiatoms of North America
Return to overview

Compare Stauroneis terryi

D.B. Ward ex T.C. Palmer 1910

Compare

Stauroneis acuta is very similar, except it is larger and has less gibbous valves. Stauroneis americana is also similar, with prominent pseudosepta at valve ends, but is generally smaller and has lanceolate valves. Stauroneis rex and S. phoenicenteron are also large, but lack conspicuous septa and pseudosepta.

LM scalebar = 10 µm
Stauroneis terryi LM6 Stauroneis terryi LM7 Stauroneis terryi LM2 Stauroneis terryi LM5 Stauroneis terryi LM4 Stauroneis terry LM1 Stauroneis terryi LM3
Length Range
154-388 µm
Width Range
35-58 µm
Striae in 10 µm
11-13

Stauroneis acuta

W.Sm. 1853

Stauroneis acuta LM5 Stauroneis acuta LM4 Stauroneis acuta LM3 Stauroneis acuta LM2 Stauroneis acuta LM1
Length Range
121-175 µm
Width Range
21-29 µm
Striae in 10 µm
12-15

Stauroneis americana

Heiden in Schmidt et al. 1903

Stauroneis americana LM6 Stauroneis americana LM5 Stauroneis americana LM4 Stauroneis americana LM3 Stauroneis americana LM2 Stauroneis americana LM1
Length Range
136-214 µm
Width Range
32-46 µm
Striae in 10 µm
11-14

Stauroneis rex

Bahls 2010

Stauroneis rex LM6 Stauroneis rex LM2 Stauroneis rex LM5 Stauroneis rex LM1 Stauroneis rex LM3 Stauroneis rex LM7
Length Range
215-386 µm
Width Range
38-60 µm
Striae in 10 µm
12-14

Stauroneis phoenicenteron

(Nitzsch) Ehrenb. 1843

Stauroneis phoenicenteron LM5 Stauroneis phoenicenteron LM4 Stauroneis phoenicenteron LM3 Stauroneis phoenicenteron LM2 Stauroneis phoenicenteron LM1
Length Range
129-199 µm
Width Range
26-35 µm
Striae in 10 µm
15-18