Rusty Blackhaw

This little tree is called rusty blackhaw (Viburnum rufidulum). It has dark, shiny green leaves. How puzzling, I thought. Nothing about is looks rusty, and how did it ever get that name?

Problem solved? The photo was taken early March here in Florida, and perhaps it is the new spring foliage that gives it its name. That's possible, although some accounts mention brilliant red fall coloration.