1. Irigenin 7-glucoside from orris root, Iris florentina.
2. A resinoid from blue flag, Iris versicolor; used as a cholagogue and cathartic. Synonym(s): irisin
a cardiac glycoside found in the leaves of plants in the iris family (Iris spp.) and the roots of plants in the Violaceae family, the violets. Causes severe, often bloody, diarrhea.