It belongs to the family Scrophulariaceae and it originates from Africa and Southern Europe. It is a perennial plant, usually cultivated as annual with hanging shape. It has elongated, light green and delicate leaves. It produces small flowers with a trilobal upper part and a bilobed lower part with many shades from white to yellow, red, lilac up to blue, sometimes even in two contrasting colors (white, blue, yellow, red, etc.). The flowering is very abundant and it is pleasantly perfumed as well.