Oak - wiktionary, Oak: any tree of the genus quercus, in family fagaceae. any tree of other genera and species of trees resembling typical oaks of genus quercus in some ways. the she-oaks in allocasuarina and casuarina, of family casuarinaceae lagunaria, white oak, in family malvaceae various species called silky oak, in family proteaceae.
Oak | home & garden information center, Oaks are divided into two groups. the “red oak” group is characterized by having bristles or points on the leaf and acorns that mature in two growing seasons and sprout in the spring after maturity. this group includes water oak, willow oak, black oak, japanese evergreen oak, southern red oak and pin oak..
Quercus alba - wikipedia, White oak may live 200 to 300 years, with some even older specimens known. the wye oak in wye mills, maryland was estimated to be over 450 years old when it finally fell in a thunderstorm in 2002. another noted white oak was the great white oak in basking ridge, new jersey, estimated to have been over 600 years old when it died in 2016. the tree measured 8 m (25 ft) in circumference at the base and 5 m (16 ft) in circumference 1.2 m (4 ft) above the ground..
