Are both Nigella and Leucanthemella both plants?
Leucanthemella Leucanthemella is a genus of flowering plants in chamomile tribe within the sunflower family.
Leptinella plumosa Leptinella plumosa is a small flowering plant in the daisy family. It is a circumantarctic species found on many subantarctic islands in the Southern Ocean. The specific epithet comes from the Latin for “feathery”, referring to the form of the leaves.