Mephisto 2499

[endanger33]

last 3 to complete
10a Mexican cactus is almost safe, returning grandchild admitted (6) p??o?? Potosi?

5d A collection of cells in dispute (7 two words) a??ssu?

31a Not old, a piano of the smallest range (4) nea?

many thanks
E

[Rapparee]

10a Peyote - reverse of oy (grandchild) in peter (safe) minus the last letter.

5d At Issue (i.e. a tissue)

31a Neap - ne = not +a p; neap, lowest tide

[endanger33]

thanks again Rapparee
E