Trees in this genus are commonly known as the stone oaks and differ from Quercus primarily because they produce insect-pollinated flowers on erect spikes and the female flowers have short styles with punctate stigmas. In this genus, two species are knownin Japan.
The nuts are edible for people but taste bitter. The nuts contain tannins, however soaking them in water removes them. It is cultivated as an ornamental plant.
It is a an evergreen shrub or small tree growing to 2–8 m and popular ornamental plant for parks and gardens. The flowers are greenish-white, 5 mm diameter. In autumn, orange fruit hangs below the flaring pink seed coverings.
Like other plane trees, its leaves are borne alternately on the stem, deeply lobed, and palmate or maple-like.Flowers and fruit are round and burr-like, borne in clusters of between 2 and 6 on a stem.
It has fragrant blossoms of green and yellow flowers in spring. In fall, it bears red fruit and leaves that turn purple. Both male and female plants are needed to bear fruit.
It is one of the main valuable forest trees in the southeastern United States, and is a popular ornamental tree in temperate climates. It is recognizable by the combination of its five-pointed star-shaped leaves and its hard, spiked fruits.
This is a climax species that is commonly found in the Japanese temperate rainforest.Specimens are also present within the forest area of the Tokyo Imperial Palace.
Live oak or evergreen oak is any of a number of oaks in several different sections of the genus Quercus that share the characteristic of evergreen foliage.
This tree is an evergreen oak tree that grows up to 20 metres tall. The acorns are ovoid to ellipsoid, 14–25 × 10–15 mm, and glabrous with a rounded apex; the flat scar is approx. 6 mm in diameter.
The wood is redish and hard then preferred choice for Japanese martial arts practice weapons such as bokken, or bokuto as well as veicle or vesseland machines.
Quercus glauca is a small to medium-sized evergreen broadleaf tree growing to 15–20 m tall. The flowers are catkins, and the fruit are acorns 1–1.6 cm long, with series of concentric rings on the outside of the acorn cup.
