I can't speak for others but for myself DYC's require pictures of the whole plant as well as closeups of the leaf attachment and flower front and back to have any hope of identification.
Yes, Asteraceae are much more informative from behind. Particularly, Helianthus has mostly narrow phyllaries in case of H. nuttallii and oval phyllaries in H. annuus and H. pauciflorus. For the last two, H. annuus has attenuate phyllary tips and H. pauciflorus - just acute tips. The forth species, H. maximiliani available for B.C. should not have teeth on the leaves.
Here are more pictures. Sorry, I forgot about the leaf attachment, will take a picture and post it, if necessary, tomorrow.
Heliopsis helianthoides scabra 'Summer Sun' perhaps? http://calphotos.berkeley.edu/cgi/i...lianthoides&title_tag=Heliopsis+helianthoides http://www.eol.org/pages/595536
Thank you both. Yes, it is Heliopsis helianthoides. 'Summer Sun' is close. Your identification, saltcedar, has lead me though to 'Bressingham Doubloon' that fits my plant better still. My Heliopsis is already deteriorating. As you can see on the picture the Spruce tree growing very close encroaches on the bed more and more, what affects in a negative way the quality of flowers and the whole plant. But in its glory it definitely looked like 'Bressingham Doubloon'. I know, it is high time to transplant it!
