Pflanzenreich Haeckel (1866) - plants Division Euthallophyta Subdivision Schizophyta Class Schizophyceae Cohn (1879) - blue-green algae see Class Schizophyceae Knoblauch 1890 Subclass Psilonemateae Family Nostocaceae Eichler (1886) see Family Nostocaceae Eichler 1886