Identification: Small white flowers with narrow petal stalk?

on East 62 Ave. btw Main & Price Edward St: one unnown short 2cm diametered white flower with narrow petal stalk attached to the stem and visible sepals

 

A plum - Prunus salicina? It looks like the one I posted in the Plums thread in Cultivar IDs, with Ron B's ID in the next posting, except in that one the clusters were all doubles, and on this, three seems to be the popular cluster number. Maybe it's one of those fancy ones Ron told us to look out for in his reply to my Feb 23 blog - 23 February, 2010 - Whitcombs, Accolades, Okame and PLUMS?

 

Japanese orchard plum or similar. Japanese plums selected for fruit production may be pure Prunus salicina selections or hybrids involving that species. Low, sinuous branching is frequent among those seen here but said not to be universal. One book I have seen in the past - probably the translated Krussmann tree and shrub set - has drawings showing a range of different growth types among Japanese orchard plums.

If there is just the one and not a row of matching street trees the occupant of the house behind may have planted it, have a name for it.

 

That's the only one on the public lawn. I can check their backyard to see if they planted more.

 

I'd just knock on the door when it seemed somebody might be home.

 

Sorry, I just looked at their backyard. No plum like trees and only one Sprenger's magnolia was found. I led a cherry walk 2~4 pm this afternoon.