There are many species of the oak tree and there are several species of it in Iran. In Hyrcanian forests, four types of Quercus are seen with the names of Quercus atropatena, Quercus castoneifolia, Quercus macranthera, and Quercus petraea.
Quercus atropatana is a medium-sized tree with an almost conical crown, sometimes seen as a shrub, often seen at low altitudes, and a plain.
Quercus castoneifolia is a tall tree that grows up to 40 meters in height. In older trees, mounds appear at the bottom of the tree trunk and the trunk cross-section forms a sinusoid, seen in the middle and at high altitudes.
Quercus macranthera is specific to high altitudes and the upper borders of the Caspian forests.
Quercus petraea (Quercus petraea) is a large tree with furry branches, smooth, light brown, pointed tips, and grooved bark.
Old stories say that Quercus petraea is the mother of forest trees and the lifeblood of their children and other trees. At the same time, these trees are especially indicative of strength, power, courage, endurance, durability, longevity, elevation in their spiritual and material sense, and are also known as fertility, nobility, and loyalty. The Quercus petraea tree is also considered a sign of eternal blessing due to its long life and in the past, it was transferred as a fund from the father to the deed of sons and daughters.