The tree has been here for many years and I suspect it could be self-sown (the area used to be a quarry before the subdivision was put in 40 years ago). The leaves often develop a powdery white mildew and shrivel-up but it can't be systemic as the tree comes away strongly each spring.
This tree has reddish bark on branches and clumps of what I assume to be pollen hanging like tiny grape clusters.
This tree was located at Cal State LA near the Confucius statue. The leaves were orange/red. The tree looked like it was about seven to eight feet high, and the circumference of the trunk was about seven to nine inches.
The family Fagaceae includes beeches and oaks, and comprises about 600 species of both evergreen and deciduous trees and shrubs, which are characterized by alternate simple leaves with pinnate venation, unisexual flowers in the form of catkins, and fruit in the form of cup-like (cupule) nuts. Fagaceous leaves are often lobed and both petioles and stipules are generally present. Fruits lack endosperm and lie in a scaly or spiny husk that may or may not enclose...