Hibiscus sabdariffa Flower Identity & Plant Part
The botanical entity is Hibiscus sabdariffa L., an annual shrub of the mallow family, Malvaceae. The part sold as the flower is the fleshy red calyx, the sepals that thicken around the seed capsule after the petals fall, and this calyx is what is dried and extracted. Leaves, seeds and petals are not added to this hibiscus extract.
Hibiscus covers many species, and the garden hibiscus, Hibiscus rosa-sinensis, is a different plant with different uses. Roselle calyces carry delphinidin and cyanidin sambubiosides, together with organic acids that make them strongly sour. The name roselle, karkade and sorrel in trade all point to the same calyx.












