These two trees are difficult for me to identify, but I hope someone will help: The branch with red blossoms was photographed in New York, Central Park. I believe that these tall trees are quite common in this area, for instance in Philadelphia. The other tree was photographed in a botanical garden in Las Vegas, Nevada, in Springs Preserve. and is the only tree of this kind I have seen. The picture should hav been rotated clockwise to vertical position! Both pictures were taken in April 2014. Grateful for an answer!