Analysis of the type of Fragilaria construens var. subsalina (Bacillariophyceae) and description of two morphologically related taxa from Europe and the United States

1. Cejudo-Figueiras, C.
2. Morales, E.A.
3. Wetzel, C.E.
4. Blanco, S.
5. Hoffmann, L.
6. Ector, L.