Species of Hippodonta have more strongly silicified frustules, broader profiles in girdle view, and simpler external raphe systems that lack the hooked or strongly deflected terminal fissures characteristic of Navicula species. Navicula goersii is distinguished from N. perminuta by its subrostrate rather than obtusely rounded ends. It differs from N. exilis by its smaller size, coarser striation, and rectangular shape of the central area. It differs from N. veneta by its smaller size, subrostrate ends, and distinctly transverse central area. Compared to N. nanissima, N. goersii has coarser striation, a larger central area, broader ends, and a less abrupt transition from radiate to parallel striae toward the apices.

LM scalebar = 10 µm
Navicula goersii LM6 Navicula goersii LM5 Navicula goersii LM4 Navicula goersii LM3 Navicula goersii LM2 Navicula goersii LM1
Length Range
8-14 µm
Width Range
3-4 µm
Striae in 10 µm

Navicula veneta

Kütz. 1844

Gc112144  Nrsa0167  Naven4 Gc112144  Nrsa0167  Naven7 Gc112144  Nrsa0167  Naven1 Gc112144  Nrsa0167  Naven5 Gc112144  Nrsa0167  Naven6 Gc112144  Nrsa0167  Naven3 Gc112144  Nrsa0167  Naven2
Length Range
17-26 µm
Width Range
4.4-5.3 µm
Striae in 10 µm
14-15 in the center valve

Also compare to


Lange-Bert., Witkowski and Metzeltin

Navicula perminuta


Navicula exilis


Navicula nanissima

(Manguin) Metzeltin and Lange-Bert.