Nemesia floribunda flower

The two-lipped flower of Nemesia floribunda has four round-tipped, oblong lobes in its usually white, but sometimes blue or faintly blue upper lip. Short dark lines are parallel and erect from the base of the upper lip, a slightly yellow patch in the centre. In picture the lobe on the left has a notched tip.

The lower lip is one-lobed, variably notched in the centre of its broad tip and also white or pale blue but here yellow with darker bulges at the base.

The four stamens in unequal pairs are hidden in the corolla mouth (Moriarty, 1997; Bond and Goldblatt, 1984; iNaturalist).