Accordingly to the discussion here https://www.inaturalist.org/flags/580319 The swamp should consider C. psilosepalus auct. iber. (to become C. inflatus) and not C. psilosepalus Sweet s.s. (to become C. x laxus).
@kitty12 It could make more sense to swap Cistus psilosepalus into Cistus inflatus. Cistus inflatus is treated as C. psilosepalus in Flora Iberica and as a result most people in Portugal and Spain use it for that species. I strongly suspect all observations on iNat refer to the species rather than the hybrid (I know mine do, this name change came as quite the surprise to me).
@duarte I agree this is a big change, potentially. Please comment on the flag, where the discussion is ongoing. It may well be that a split should also take place.
@kitty12 It could make more sense to swap Cistus psilosepalus into Cistus inflatus. Cistus inflatus is treated as C. psilosepalus in Flora Iberica and as a result most people in Portugal and Spain use it for that species. I strongly suspect all observations on iNat refer to the species rather than the hybrid (I know mine do, this name change came as quite the surprise to me).