The sweet violet, Viola odorata, is used in perfumery both for its flower and its leaf; violet flower absolute is rich in ionones, while violet leaf absolute contributes a lovely fresh green note with some leathery undertones. After the discovery of violet ionone aroma chemicals, the very expensive violet flower absolute has been used much less frequently. Ionones have complex odors with varying proportions of violet, orris, woody, powdery, and fruity notes. Natural ionone isolates are now available, but they do not come from violet flowers.
Viola odorata is shown.