I had to edit this photo to pass on to local botany friends, so thought I'd also add it to my Plants of Alberta album. The female flowers have a much shorter, rounder calyx than the male, and I'll post a photo of one later. This species is native to most of Europe, Western Asia and Northern Africa, so is a non-native plant in Alberta, where it is a noxious weed. Taken at the Erlton/Roxboro Natural Area on 23 July 2014.

www.agric.gov.ab.ca/app107/loadPest?action=display&id=61

This morning, I slept through my alarm's loud music for an hour and then for an extra hour and a half. Have an Open House to go to this afternoon, so am in a real rush and may have to finish off today's photos when I get home.