Quercus cerris | Stanford
Here you can see the new growth actively expanding, with the male flowers, or catkins, dangling. Female flowers are barely visible at the base of some of the leaves. Please note the green “hairs” at the opening end of the new growth. Those hairs are indicative of oak subgenus of species that are named after this species, the Cerris Oak group. This group includes Chestnut-leaved Oak, Q. castaneifolia, and Cork Oak, Q. suber, among others.