Pyrethrin is extracted from which part of Chrysanthemum cinerariifolium?

Pyrethrin is extracted from flowers of Chrysanthemum cinerarifolium.
The pyrethrins are a class of organic compounds normally derived from Chrysanthemum cinerariifolium that have potent insecticidal activity by targeting the nervous systems of insects.
Pyrethrin naturally occurs in chrysanthemum flowers and is often considered an organic insecticide when it is not combined with piperonyl butoxide or other synthetic adjuvants.