Euphorbia undulata SynonymySource: 2010: World Checklist of Selected Plant Families (2010), copyright © The Board of Trustees of the Royal Botanic Gardens, Kew.Euphorbia undulata M. Bieb., Fl. Taur.-Caucas. 1: 371. 1808≡Tithymalus undulatus (M. Bieb.) Klotzsch & Garcke in Abh. Königl. Akad. Wiss. Berlin 1859: 92. 1860≡Galarhoeus undulatus (M. Bieb.) Prokh. in Trudy Kuibyshevsk. Bot. Sada 1: 43. 1941ContentDistribution Bibliography Distribution Rf(CS E S) Euro+Med: Russia (E European Russia nativeA, North Caucasus nativeA, S European Russia nativeA) Bibliography A. Kew World Checklist of Selected Plant Families