Can you tell me where you are located? That will help in my search. Thanks, A
I live in Fort St John , B C Canada. This is a bush in the edge of a wood. It had only these two roses on the end of two branches.
The green flower is actually an insect gall. The pine-cone willow gall, caused by the Gall Midge Rhabdophaga, can look similar, though I don't find any online photos with this fabulous bloom appearance. Here's more information: Bug guide: http://bugguide.net/node/view/270904/bgimage
This article from the Calgary Herald has the photo closest to your green 'rose' that I found: Sunday, Nov. 14, 2010 "A galling situation": http://calgaryherald.com/life/homes/sunday-november-14-2010-a-galling-situation?__lsa=42e5-7f44
Your local Master Gardeners or the UBC Entomology department might like these photos and tell you more about them: http://www.biodiversity.ubc.ca/entomology/contact/