This tree is recently photographed in Quito, Ecuador. It grows everywhere. I'm new to South American flora, so I'd like to know what the species it is?
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Your plant appears to be Chionanthus pubescens, the pink fringe tree, which is native to Ecuador and Peru. The genus has a number of species. It belongs to the family Oleaceae, which includes well known plants like jasmine, forsythia, ash trees and olives. I could not find much biological information on the pink fringe tree but plantlist.org contains a number of links to various databases that may be helpful if you want to dig deeper.