Compare Cymbella mexicana
Compare
Cymbella mexicana is differentiated from C. janischii by the size of the valve and features of the raphe. Cymbella janischii valves are larger in length and breadth than those of C. mexicana. In addition, the proximal raphe ends of C. janischii are larger than those of C. mexicana. The terminal fissures of C. janischii are dorsally deflected ~60º, whereas those of C. mexicana are dorsally deflected nearly 90º.
LM scalebar = 10 µm
Length Range
80-155 µm
80-155 µm
Width Range
26-33 µm
26-33 µm
Striae in 10 µm
6-8 in the central valve, 7-10 at the ends
6-8 in the central valve, 7-10 at the ends
