Onondaga Question

There is a wealth of information on the Internet, but I can't seem to find much about the blossoms on my Onandaga viburnum.



From their appearance, I thought the inner blossoms were male (look at those stamens!) while the outer flowers were female, but then I read that the inner blossoms become the berries while the outer flowers are sterile.



So, are the outer flowers to lure pollinators? To provide a landing platform for butterflies? Or to protect the productive blossoms? Any theories out there?