some sort of cherry?
NOTE: It is really helpful to figure out the tree if you include: what part of the country you live in - whether the branching pattern alternate or opposite and whether the leaves are compound or not.
That was a really good guess, HD. I kind of thought cherry when I saw the fruit raceme, kind of like Choke Cherry or Black Cherry, but the leaves are way too big.
HD is right on the money about part of the country, opposite or alternate and whether or not they are compound. A good picture of the bark on the trunk wouldn't hurt either.
Also an indication of the overall size - whether it is a tree or a shrub, possibly. Does it have thorns, how does the the tops of the leaves differ from the undersides, if at all. Are there teeth along the edge (margin) of the leaf? How are the veins in the leaf arranged - better yet a closeup picture of one mature leaf so these things can be determined. What colour are the ripe fruit. All these things would greatly help an identification.
When I see kgd's pictures, it's pretty easy, in a lot of cases to recognize the distinctive flowers, because I live in the same general area. It also helps when I know what's in bloom. You're in a whole different area, as is HD so that makes it very difficult. Thank goodness for Norcal Blacktail.
There is one other thing, too. That tree/flower/plant may not be native to your area - it could have been planted as an ornamental but originated in Madagascar! Birds could have dropped seeds in natural areas which caused their growth there. That's why I have Viburnum lantana - Wayfaring Tree (Otzi, the Iceman's preferred arrow wood) growing in my hiking area. It's not native here.
Anyway, just a couple of thoughts on the subject.
Doc