Lactuca perennis is known from only a few localities in NW Greece, growing in open woodland on rocky limestone slopes at 900–1500 m, but is otherwise fairly widespread in C & S Europe. The somewhat similar L. intricata (= L. graeca), also with blue ligules, occurs in mountains of Greece, S Albania and W & S Anatolia. It is a lower, intricately branched plant with greyish rather than black achenes.
–IoI –NPi –SPi –Pe –StE –EC NC –NE –NAe –WAe –Kik –KK –EAe
Greece (East Aegean islands ‒ absent; East Central Greece ‒ absent; Ionian Islands ‒ absent; Kiklades ‒ absent; Kriti and Karpathos ‒ absent; North Aegean islands ‒ absent; North Central Greece ‒ present; North Pindos ‒ absent; North-East Greece ‒ absent; Peloponnisos ‒ absent; South Pindos ‒ absent; Sterea Ellas ‒ absent; West Aegean islands ‒ absent)
Temperate and submediterranean Grasslands