Fagus (Beech) habit - large tree (others may be small "scrub oaks")
Fagus (Beech) fruit - "beech nut"
Castanea dentata fruit - "American chestnut"
Quercus variation in leaves among different oak species
Quercus (Oak) male catkins
Quercus male flower
Quercus male catkins below, female flowers above in leaf axils
Quercus female flowers (2)
Quercus stem with acorn caps
Quercus fruit - 'acorn'; note many small bracts that make up 'cap'