Night-flowering Catchfly / Silene noctiflora

This (poor quality) photo was taken at the Medicine River Wildlife Centre, a long drive NW of Calgary, when we spent the day botanizing the forest and meadows there on 4th July 2010. Posting it as a reminder to check if this flower goes by another name. I can't remember if Night-flowering Catchfly is the same as Campion. No, it is a different Silene species.

www.agriculture.gov.sk.ca/Default.aspx?DN=210c55d8-7f5a-4...