Maybe another name might help a search, Lotte?
Papaver dubium L. subsp. stevenianum
Kew plantlist has:
Papaveraceae Papaver stevenianum Mikheev
Bot. Zhurn. (Moscow & Leningrad) 78(5): 123. 1993
Distribution:Stavropol (North Caucasus, Caucasus, Asia-Temperate)
Type Information
Collector(s): A.Mikheev
Locality: Ciscaucasia prov. Stauropoliensis, vinetum haud procul ab oppido Pjatigorsk
Collection Date:
1968-5-5
Type Remarks:
holotype cited as lectotype in error
validation of:Papaveraceae Papaver stevenianum Mikheev Byull. Moskovsk. Obshch. Isp. Prir., Otd. Biol. 86(3): 86. 1981
basionym of:Papaveraceae Papaver dubium L. subsp. stevenianum (Mikheev) Kubát & Šípošová Fl. Slovenska 5(4): 766 (42). 2002
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Can't say I knew thiswas what it looks like!
http://caliban.mpiz-koeln.mpg.de/radu/high/Rastenie-69.3_20x30.htmlhttp://www.flickr.com/photos/denjam/4413148799/