Compare Achnanthidium subhudsonis var. kraeuselii
Compare
Achnanthes subhudsonis var. krauselii is very small, and might be confused with Microcostatus krasskei. The frustules of A. subhudsonis var. krauselii, however, are distinctive because of the widely spaced, radiate striae on the raphe valve.
LM scalebar = 10 µm
Length Range
9-14 µm
9-14 µm
Width Range
2.9-4.0 µm
2.9-4.0 µm
Striae in 10 µm
20
20