Pyrethrins are a class of natural terpenoid pesticides produced by Tanacetum cinerariifolium, commonly known as chrysanthemum. Here we present evidence that cannabis may be able to produce pyrethrins endogenously. Flower from a cannabis plant grown in a closed hydroponic environment contained 2.48 parts per million pyrethrin I by weight. A comparison of the genetics of T. cinerariifolium and Ca...

the genus tanacetum l. is one of the most important medicinal plant that contains 28 species in iran, 12 of them are endemics. this paper reports the essential oil composition of tanacetum hololeucum (bornm.) podlech; tanacetum kotschyi (boiss.) grierson, growing wild in iran. plant flowers were collected from different zones of dizin in north of iran. all samples were hydro-distilled (clevenge...

A new vagrant species of phyllocoptine mites, Leipothrix nagyi n. sp . collected from Zinnia elegans (Asteraceae) is described and illustrated Hungary. Further three eriophyoid were recorded for the first time in Hungary, viz. Aceria hippophaena (Nalepa, 1898) found on Hippophaë rhamnoides, Epitrimerus cupressi (Keifer, 1939) Cupressus sempervirens tanaceti Boczek et Davis, 1984 associated with...