Nemesia denticulata

Nemesia denticulata, the toothed aloha, is a species of flowering plant in the genus "Nemesia" of the figwort family Scrophulariaceae, native to South Africa. A matforming perennial useful for borders, it has gained the Royal Horticultural Society's Award of Garden Merit. 
The Latin specific epithet "denticulata" means "slightly toothed", referring to the notched petal edges. 