(Ehrenberg) Ralfs in Pritchard 1861 Category: Eunotioid
TYPE SPECIES: Amphicampa alata (Ehrenberg) Ralfs in Pritchard
Amphicampa is asymmetrical to the apical axis and symmetrical to transapical axis. Both the dorsal and ventral margins of the valves are undulate. The raphe is very short and may only be visible through the thickening of the helictoglossa.
A single species, A. eruca Ehrenberg, is found in circumneutral to alkaline waters in the midwest and western United States. This species has also been found in subfossil pothole deposits in Iowa (Julius, unpublished data).
Cite This Page:
Spaulding, S., and Edlund, M. (2009). Amphicampa. In Diatoms of the United States. Retrieved November 22, 2014, from http://westerndiatoms.colorado.edu/taxa/genus/Amphicampa