Cotton Trees (100 Happy Days)

I was stopped at a light on my way home from work tonight.  Very close to home.
I looked to my right & what did I see:

Like the smear on my windshield?
Nice huh?

I do not know what kind of tree this is but I love it. 
Cotton Tree is what I call it.
Clearly it isn't but I can never remember the name of it from one season to another.

So that's my happy.

What's yours?