Allium flavescens?

This is a nice new edimental Allium, although its identity is still being discussed by the experts!
I received seed of this a few years ago from my friend Hristo Hristov in Bulgaria under the name “mountain slizun” He wrote: “The woman who sent them to me is not an avid collector, so I highly doubt she knew it’s Latin name. I guess the seeds were collected near her city in Kazakhstan (map of the collection location: http://tinyurl.com/hdt5pk6)
Slizun is Allium nutans, but the name she called it could be just how she calls it”
Based on pictures I posted on the Alliorum forum last year,Mark McDonough thought it’s probably a hybrid, although with close affinity to the flowers of Allium flavescens. However, the leaves of my plant are broader than that species. Other possibilities are both Allium senescens and A. nutans both of which are found in Kazakhstan. This year there was some variation in flower colour, one quite pink (I guess I planted several seedlings). Whatever it is, it’s a nice plant.