Compare Pinnularia lata
Compare
Pinnularia alpina has larger elliptic valves (> 38 µm wide) with lanceolate axial areas. Pinnularia rabenhorstii has smaller valves (< 18 µm wide) and subrostrate apices. Pinnularia borealis has smaller valves (< 10 µm wide) and 5-6 striae in 10 µm.
LM scalebar = 10 µm
Length Range
80.2-127.6 µm
80.2-127.6 µm
Width Range
23.2-28.7 µm
23.2-28.7 µm
Striae in 10 µm
3-4
3-4
