Click http://en.wikipedia.org/wiki/Cherry_blossom for more information about cherry trees.
See https://pbase.com/hjsteed/foliage_cherry for more prunus tree (mostly cherry tree) photos.
Prunus trees include cherry, peach, plum, apricot & other fruit bearing and ornamental sub genus or species plants. I’m advised that prunus trees have been dated on earth about 40 million years before primates. Click http://en.wikipedia.org/wiki/Prunus for more information.