Calendula officinalis Identity & Plant Part
The botanical entity is Calendula officinalis L., the pot or English marigold, an annual of the Asteraceae family. The part used is the flower head, the golden to orange florets gathered when fully open. Leaves, stems, roots and seed are not part of this ingredient.
The common name marigold is the main source of error. Calendula is not the African or French marigold, Tagetes erecta and Tagetes patula, which are a different genus and the main commercial source of lutein. A calendula flower extract and a tagetes extract share a color range and little else.
Calendula flowers hold carotenoids, flavonoid glycosides based on quercetin and isorhamnetin, triterpenoid saponins and fatty esters of triterpene alcohols.












