Compare

Navicula cryptotenella has wider valves and acute valve apices. Navicula cryptotenelloides has smaller valves and acute valve apices. Navicula recens is similar to N. eileeniae in the striae pattern in the central part of the valve where short and long striae alternate, but is larger and has coarser striae and areolae.

LM scalebar = 10 µm
Navicula eileeniae LM1 Navicula eileeniae LM2 Navicula eileeniae LM3 Navicula eileeniae LM4 Navicula eileeniae LM5 Navicula eileeniae LM6 Navicula eileeniae LM7
Length Range
17.8–26.5 µm
Width Range
4.2–5.4 µm
Striae in 10 µm
14-15

Navicula recens

Lange-Bert. in Krammer and Lange-Bert. 1985

46649  Lm2 46649  Lm5 46649  Lm4 46649  Lm3 46649  Lm6 46649  Lm1 46649  Lm7
Length Range
17-42 µm
Width Range
5.8-8.2 µm
Striae in 10 µm
11–13

Also compare to

Navicula cryptotenella

Lange-Bert. in Krammer and Lange-Bert.

BioData Reference
Lange-Bertalot 2001 Pl 26 Fig 17-23

Navicula cryptotenelloides

BioData Reference
Lange-Bertalot 2001 Pl 26 Fig 8-16