Source: Greuter, W. (2006+): Compositae (pro parte majore). – In: Greuter, W. & Raab-Straube, E. von (ed.): Compositae. Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity.
Klasea in Cuvier, Dict. Sci. Nat. 35: 173. 1825
Euro+Med: Albania native; Algeria native; Armenia native; Austria, with Liechtenstein native (Austria native); Azerbaijan, with Nakhchivan (Azerbaijan native, Nakhchivan native); Belarus native; Bosnia-Herzegovina native; Bulgaria native; Crete, with Karpathos native; Crimea native; Croatia native; Cyprus native; Czech Republic native; Former Yugoslavia native; France, with Channel is. and Monaco (France native); Georgia, with Abkhazia and Adjara native; Greece native; Hungary native; Israel/Palestine native; Italy, with San Marino and Vatican City native; Jordan native; Lebanon native; Libya native; Moldova native; Montenegro native; Morocco native; North Macedonia native; Poland native; Portugal native; Romania native; Russia (C European Russia native, E European Russia native, North Caucasus native, S European Russia native); Serbia, with Kosovo native; Sicily, with Malta native (Sicily native); Slovenia native; Spain, with Gibraltar and Andorra native (Spain native); Switzerland native; Syria native; Tunisia native; Turkey (Turkey, Asiatic part native); Ukraine native; Ukraine, with Crimea native