Navicula vilaplanii is similar, but has only slightly protracted apices.

LM scalebar = 10 µm
Length Range
17-22 µm
Width Range
3.1-4.0 µm
Striae in 10 µm
18-21
Navicula longicephala LM2
Navicula longicephala LM3
Navicula longicephala LM6
Navicula longicephala LM7
Navicula longicephala LM5
Navicula longicephala LM4
Navicula longicephala LM1
Navicula longicephala LM2 Navicula longicephala LM3 Navicula longicephala LM6 Navicula longicephala LM7 Navicula longicephala LM5 Navicula longicephala LM4 Navicula longicephala LM1

Navicula vilaplanii

(Lange-Bert. and Sabater) Lange-Bert. and Sabater in Rumrich et al. 2000

Length Range
12-15.5 µm
Width Range
2.5-3.3 µm
Striae in 10 µm
20-24
Navicula vilaplanii LM6 Navicula vilaplanii LM5 Navicula vilaplanii LM1 Navicula vilaplanii LM4 Navicula vilaplanii LM7 Navicula vilaplanii LM2 Navicula vilaplanii LM3