Compare Halamphora oligotraphenta
Compare
Halamphora oligotraphenta is distinguished from H. veneta by having protraccted capitate valve ends, and from H. coffeaeformis by its punctate dorsal striae, and widely spaced proximal raphe ends.
LM scalebar = 10 µm
Length Range
22-33 µm
22-33 µm
Width Range
3.9-4.6 µm
3.9-4.6 µm
Striae in 10 µm
26-30 in the center, 32-34 near the poles
26-30 in the center, 32-34 near the poles
Halamphora veneta
Length Range
10-40 µm
10-40 µm
Width Range
3.5-6 µm
3.5-6 µm
Striae in 10 µm
20-25 in central area, 27-30 at the ends
20-25 in central area, 27-30 at the ends
Halamphora coffeiformis
Length Range
15-40 µm
15-40 µm
Width Range
5-7 µm
5-7 µm
Striae in 10 µm
17-21 at center, 22-24 near apices
17-21 at center, 22-24 near apices