Compare Stauroneis supergracilis
Valves of S. gracilis are smaller and elliptic-lanceolate with subrostrate apices and higher areolae density in the striae (18-22 in 10 µm). Valves of S. heinii are wider relative to their length. Stauroneis phoenicenteron has proximal raphe ends that are straight, not curved.
LM scalebar = 10 µm
Length Range
124-213 µm
124-213 µm
Width Range
21-33 µm
21-33 µm
Striae in 10 µm
15-16
15-16
Length Range
68-127 µm
68-127 µm
Width Range
13-22 µm
13-22 µm
Striae in 10 µm
15-18
15-18
Length Range
116-191 µm
116-191 µm
Width Range
22-36 µm
22-36 µm
Striae in 10 µm
15-17
15-17
Length Range
129-199 µm
129-199 µm
Width Range
26-35 µm
26-35 µm
Striae in 10 µm
15-18
15-18
