We have an Umbrella Tree in our school yard. In the Summer when there are lots of leaves, it really works. If you go under it when it is raining you stay dry.
We think it is a weeping willow. It is very beautiful. In Spring there are catkins on the tree. Catkins are furry flowering spikes that hang down. They are soft to touch, but much better not to pick them but to leave them to grow. The catkins fall off and the leaves grow then. It is a good looking and interesting tree.