1 23 Phytochemistry Reviews Fundamentals and Perspectives of Natural Products Research ISSN 1568-7767 Phytochem Rev DOI 10.1007/s11101-013-9333-1 Major secondary metabolites of Iris spp. Wirginia Kukula-Koch, Elwira Sieniawska, Jarosław Widelski, Otgonbataar Urjin, Paweł Głowniak & Krystyna Skalicka-Woźniak