Lavandula angustifolia officinalis, is a flowering plant, native to the Mediterranean ( Spain, France, Italy, Croatia ect. )， The flowers are pinkish-purple (lavender-coloured), produced on spikes 2–8 cm (0.79–3.15 in) long at the top of slender, leafless stems 10–30 cm (3.9–11.8 in) long.