What are the shapes and colors of osmanthus leaves?

The leaves of osmanthus fragrans are dark green in shape and color, and the newly grown ones are a little purple. They are shaped like eyes, which are relatively large and the leaves are not very toothed!

I. Basic concepts

1. Osmanthus fragrans is the common name of many trees in Oleaceae in China, which stands for oleoresin (scientific name: Osmanthus fragrans? (Thunb。 )Lour。 ): also known as "rock laurel", it is an evergreen shrub or small tree of Oleaceae. Hard texture, thin skin, long oval leaves, sharp, opposite, will not wither in winter. In the leaves and intestines of peanuts, the corolla is divided into four parts, and its shape is small. There are many varieties of horticulture, among which Jingui, Yin Gui, Dangui and laurel are the most representative.

2. Osmanthus fragrans is one of the top ten traditional famous flowers in China. It is an excellent ornamental and practical garden tree species that integrates greening, beautification and fragrance. Osmanthus fragrans is necessary.

3. In China's ancient poems about flowers, the number of poems about Guangxi is also considerable. Since ancient times, it has been deeply loved by the people of China and regarded as a traditional famous flower.

Osmanthus fragrans tea made of osmanthus fragrans is a specialty tea in China, with soft aroma and delicious taste, which is deeply loved by the public. Osmanthus fragrans is widely used in garden construction.

Two. morphological character

1. Osmanthus fragrans is an evergreen tree or shrub, with a tree height of 3-5 meters and a maximum of 18 meters; The bark is grayish brown. Branchlets yellowish brown, glabrous. Leaf blade is leathery, oval, oblong or elliptic-lanceolate, 7- 14.5 cm long and 2.6-4.5 cm wide, the apex is tapered, the base is tapered into a wedge shape or a wide wedge shape, the whole edge or upper part is usually serrated, the two sides are hairless, the two sides of the gland point are connected with small blisters, the midvein is concave and convex, and the lateral veins are 6-8 pairs. The petiole is 0.8- 1.2 cm long, and the longest is 15 cm, without hair.

2. Cymes clustered in leaf axils, or nearly broom-shaped, with many flowers in each axil; Bracts broadly ovate, thick, 2-4 mm long, small at the top, glabrous; Pedicel slender, 4- 10 mm long, glabrous; These flowers are very fragrant; Calyx is about 65438 0 mm long with slightly irregular lobes; Corolla is yellowish white, light yellow, yellow or orange red, 3-4 mm long, and corolla tube is only 0.5- 1 mm long.

3. Osmanthus fragrans with strong growth potential, stout branches, large leaf shape, rough leaf surface, dark green and orange red leaves; There are silvery laurel trees with medium growth, smooth leaves, serrated leaves, ivory flowers and dense and sweet flowers.

Three. growing environment

Osmanthus fragrans adapts to subtropical climate. Sexual preference is warm and humid. The average temperature in the planting area is 14-28℃, the average temperature in July is 24-28℃, the average temperature in June is above 0℃, the minimum temperature is-13℃, and the optimum growth temperature is 15-28℃. Humidity is very important for the growth and development of osmanthus fragrans. The annual average humidity is 75%-85%, and the annual precipitation is about 1 1,000 mm. Especially when young trees and adults bloom, they need more water. If there is drought, it will affect flowering, and strong sunshine and shade are not good for their growth. Generally they need 6-8 hours of light every day.