Are both Nigella and Leucanthemella both plants?
Nigella Nigella is a genus of 18 species of annual plants in the family Ranunculaceae, native to southern Europe, north Africa, south and southwest Asia. Common names applied to members of this genus are nigella, devil-in-a-bush or love-in-a-mist.
Lemanea Lemanea is the generic name for an alga of which occurs in the British Isles.