Tanacetum cinerariifolium Sch.Blp. Asteraceae Dalmation chrysanthemum, Pyrethrum, Pellitory, Tansy. Distribution: Balkans. Source of the insecticides called pyrethrins. The Physicians of Myddfai in the 13th century used it for toothache. Gerard called it Pyrethrum officinare, Pellitorie of Spain but mentions no insecticidal use, mostly for 'palsies', agues, epilepsy, headaches, to induce salivation, and applied to the skin, to induce sweating. He advised surgeons to use it to make a cream against the Morbum Neopolitanum [syphilis]. However he also describes Tanacetum or Tansy quite separately.. Quincy (1718) gave the same uses

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Woodville (1792) only recommends it for intestinal worms, Bentley (1861) used it as a tonic and for intestinal worms, Flucker & Hanbury (1879) used it to induce salivation. Martindale (1936) had all the insecticidal uses from scabies to mosquito repellent and as a treatment for intestinal worms. Whatever the confusion regarding names, it is hard to see that it was used as an insecticide until a hundred years ago. Photographed in the Medicinal Garden of the Royal College of Physicians, London.

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