72)Commie goes to south Portugal without RV to find ancient plant (3,5).........I presume its riviera without the RV, but I don't get the rest.
75)Tree isle gets groove without ring (8)
18)Moody Blues found it left behind (9)
17)Tsunami -it goes back when lads return greeting (5,4)
4)Actor Mckellen leaves devil by the water down under (6,3)