Rhododendron simsii

1 species of azaleas
the
department. Native to China, it has been introduced for many countries and has become a common ornamental plant in gardens. There are about 470 species of plants of the same genus
azaleas in
, most of which are collectively referred to as azaleas. In addition to Xinjiang, Ningxia, all over the country, but more than
80
% of the species concentrated in southeast Tibet, northwest Yunnan, southwest Sichuan, is the world's main distribution center of azalea plants.characteristics of wild species: deciduous or semi-deciduous shrubs with many branches, thin and straight branches, and brown, shiny, flat, thick fur. Leaf-shaped, oval-shaped or inverted, with longer spring leaves, shorter summer leaves, and coarse fur on both sides. Flower
2

6
the top of a cluster of branches;
5
is deep and thick, the crown is bright red or crimson, wide
flepper
-shaped,
5
split, with crimson spots on the inside of the upper crack; the male
10
; the sub-room is thick,
10
room, the flower column is slender.egg is round and thick with thick fur. Widely located south of Qinling, China, it is commonly found in the hilly areas of the lower reaches of the Yangtze River, east to Taiwan Province. Thailand and Vietnam also have, wild in hillside thickets or under forests, which are indicative plants of acidic soil. "DuJuan" one of the earliest from the Tang Dynasty Li Deyu", "Pingquan grass and wood", the ancient books of the past generations also have Yingshan red, mountain, Xie leopard flower and other names. The roots, leaves and flowers of azaleas are medicinal and contain a variety of chemical components, which have the effect of live blood pain relief and rheumatism. There are more than
50
species in China, such as the common ornamental plant azaleas, which belong to the Yingshan Red Sub-Genus.the breeding of azaleas can be made by seeding or seeding methods, and the
tissue
culture
method of breeding azaleas has also been successful. Most of the azalea plants are for viewing. There are few gardens in Europe and North America that do not grow azaleas. Britain, on the other hand, is an effective country for the introduction and cultivation of azaleas. Foreign cultivation of azaleas, a category of evergreen azaleas, a variety of species, such as convex azaleas, yunjin azaleas, long-order azaleas, Caucasian azaleas and tree-shaped azaleas in the Eastern Himalayas. The other category is Yingshan Red Sub-Genus and Sheep-Yang sub-genus, collectively known as deciduous azaleas, such as
R
.
-teum
(from Europe to the Caucasus) and its hybrids, as well as some species from North America. There is also a category of azaleas, such as Zhusa Dujuan (East Himalayan) and so on. Azaleas have bred a large number of hybrids of high horticultural value in Europe and the United States.are common in various parts of China, in addition to Dujuan, the famous also includes: zhaoshan Bai-producing northeast, north China and Gansu, Shandong, Hubei, Sichuan. For multi-branched shrubs, young branches are scaly, leaves are covered with needle-shaped long circle, under the dense scales, flowers small and most, dense branches into a total flower sequence, flower crown white, long
6
to
8
mm,
5
deep cracking, there are scales outside. The leaves contain volatile oil for the treatment of chronic bronchitis drugs, but must be detoxifyed before they can be used., also known as the sheep flower, was first recorded in the Book of God's Farm Herbs. Deciduous shrubs, young branches are haired, leaves are round or round needle-shaped, soft hairs, umbrella-shaped flowers, flower crowns bright yellow, petals wrinkled, children have soft hair (see page
117
of the color map insert). Distribution of the Yangtze River basin provinces to Guangdong, Fujian. Flowers, fruits, leaves and other parts are toxic, flowers contain toxic ingredients wood toxin (
andromedo-toxin
) and
ericolin
), leaf flavonoids, azalea toxins (
rho-dotoxin
), coal-based methyl acid (
sparassol
). Toxic to people and animals, medicinal use has the effect of wind, pain relief.Azalea plants contain flavonoids, steroids, glycosides, phenols, steroids, volatile oils and other chemicals, many of which have medicinal value, coughing, sputum, flat wheezing, anti-hypertension, cholesterol, diuretic, antibacterial and other uses, but also to treat cardiovascular diseases, rheumatism and so on. Alfalgado azaleas, mountain reds, flamingo azaleas, etc. have been made into a variety of dosage forms of drugs, used to treat bronchitis. Some azaleas, leaves or flowers contain volatile oils and have a strong aroma for use in the spice industry.。