Rhizome of Iris florentina L., I. pallida Lam. or I. germanica L., Iridaceae. Habit. Northern Italy, Germany, France. Constit. Iridin, irone, ionone, resin, starch, volatile oil (butter of orris). Review: W. A. Poucher, Perfumes, Cosmetics and Soaps vol. 1 (Chapman & Hall, London, 1974) pp 287-290.
Constit. About 85% myristic acid; the odorous principle irone; methyl myristate, oleic aldehyde.