Nancy, got another one for you.

     These trees line the avenue where I live. Just about every yard has one. They're beautiful and very fragrant almost a sweet perfume aroma. My neighbor said she thought it was a wisteria but I've seen and smelled a wisteria it was more willowy and it's fragrance was different than this. My guess is it's a lilac of some sort but then again everythings a lilac to me as I'm just guessing. I can tell you this, the bloom only lasts a couple of weeks or so and then the rest of the spring and summer it devotes to proliferant large seed pod production . Can you tell what it is? Thanks; you wonderful botanist.