What is the name of this flower with purple leaves and orange inner part in NYC? I've photographed this flower a few days ago in New York City: !enter image description here Does anybody know the name of it? (and how is the orange part called?)

It's Echinacea. I've linked to one site but if you run an images search with Echinacea as the search term you'll see lots of examples.

And here is the WP page.

Supplementary

Echinacea are members of the Compositae. The flower (the **head** ) in your picture is actually made up of lots of individual smaller flowers (i.e. it is a _composite_ flower). The petals are formed by **ray flowers** , and the central part, the _disc_ is made up of **disc flowers**. More details at the WP page I have linked to for Compositae.