I doubt that the coloured appendages are flowers, they look like bracts
(modified leaves) to me. I think you will find that the flowers are the
tiny buds on the end of the stalks. The best that I can come up with is
Bougainvillea, although I have not seen one that colour. Plant breeders
make this game harder to play every year.
As Dan said if we could see the stems it would be easier as most Bs with
prolific coloured bracts have thorns on the stems and in general the
formation of the leaves and axils on the stem is often diagnostic.
Did you see this plant yourself? Was its habit a scrambling heavy climber
or something else? If so B. is most likely.
I think it might be a hybrid Euphorbia of some sort (lots of new
cultivars are being developed with showy, doubled flowers).
But as the previous responder said, it helps to have images of
more parts of the plant. I may be way off.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.