Compare Achnanthes tumescens
Compare
The central gibbous valve margin of A. tumescens is much smaller than that of A inflata, while the central valve margin of A. coarctata. Achnanthes tumescens is coarser and more robust than A. mauiensis. The striae of A. tumescens are finer than those of A. elata.
LM scalebar = 10 µm
Length Range
29-37 µm
29-37 µm
Width Range
8.0-9.5 µm
8.0-9.5 µm
Striae in 10 µm
14-15 on raphe valve, 12-13 on rapheless valve
14-15 on raphe valve, 12-13 on rapheless valve
Achnanthes coarctata
Length Range
32-70 µm
32-70 µm
Width Range
9.4-15 µm
9.4-15 µm
Striae in 10 µm
11 on the raphe valve, 9-10 on the rapheless valve
11 on the raphe valve, 9-10 on the rapheless valve
Achnanthes mauiensis
Length Range
22.4-27.1 µm
22.4-27.1 µm
Width Range
5-7.5 µm
5-7.5 µm
Striae in 10 µm
15-19 on both valves
15-19 on both valves