This daisy-like flower is an aster: the flower is really a composite of many smaller flowers. The genus, Erigeron, includes scores of species, but I’ll take a chance and say that the one pictured here is Philadelphia fleabane, because of the way the leaves are wrapped around the hairy stems and because of the abundant number of tiny ray florets (they look like white petals) that make up the flower head.
I know it is considered by many to be a “native weed”, but just look how lovely it is on a sunny day! I love the way it unfurls from a tight pink fist into a spray of white and yellow sunshine! Compare this fleabane to a shorter, stouter one, Robin’s Plantain.