Solved ID for friend please

This is a photo from a flower arrangement. I know nothing further about it but the friend wants to know what the shrub is that has the white flowers on the left.
They appear to be growing out of the small branch you can see top left.

The plant bottom right appears to be Solomon's Seal

I seem to recognise the open flowers but can't place them.

Thanks in advance

 

Thanks but don't you think the flowers are too open and spread out for that?

 

Thanks @Alisa and @Silver surfer