I have added references to 'Mohnrose' from German sources, which describe it as a dark red, full Gallica. The French term would be 'Rose Pavot', but the descriptions there do not match.
Thank you Jedmar. I am getting myself quite lost between 'Papaverina major', R. papaverina minor' and 'R. papaverina' Monch, so I think I will move on. But before I do, I think the 1982 reference, which interested me in the first place, quite possibly belongs in the 'Alika' file?