Yellow Poppy like - What are they?

Can anyone identify these for my good wife???


Thanks.

 

looks like one of the American dogwoods - Cornus - of which there are many species and variants. Photo of whole tree, please!

 

Thanks Tor.

You pointed us in the right direction.
It is in fact a Cornus Nuttalli - as seen here - with the pink flower having faded (see the extreme points on my image).
http://www.burncoose.co.uk/site/plants.cfm?pl_id=1302#

Thanks again.

 

Here's the actual tree

 

It's a very pretty tree!

 

Yes - it is.

Would be nice to have one that size - apparently they change colour during the seasons adding something new as the year progresses.
We'll now try to find one at a reasonable price.