Does anyone know what kind of tree is planted in front of the main entrance of the single apartment in Taoyuan Village, Shenzhen? It smells so bad lately that I have to close the door all day. I don’

Does anyone know what kind of tree is planted in front of the main entrance of the single apartment in Taoyuan Village, Shenzhen? It smells so bad lately that I have to close the door all day. I don’t even know if there is

The smelly flower blooming in Shenzhen now must be the pot stand, the Chinese name of the sugar gum tree (Latin name: Alstonia scholaris)

Although it smells bad, it is harmless to the human body. Details See the following report:

“I opened the front and rear windows at night and sat on the balcony to enjoy the cool air. Suddenly, a strong smell of flowers and trees came. I personally think the smell is quite good, but many people in the community said it smelled too much. It will cause dizziness and nausea.” Recently, Ms. Zhang, a citizen who lives in Yong Yiting, Xingwen Road, reported that a green tree called “Penjiao” planted near the community was in bloom recently, but nearby residents discovered that it was blooming. The flowers emit bursts of strong smell, and smelling too much will cause physical discomfort.

■The "floral fragrance" of green trees is pungent

At noon yesterday, the reporter discovered the name reported by Ms. Zhang on Xingwen Road, Boai 3rd Road and Tiyu Road in the East District. Green trees in pots and shelves. The pot stand is in the flowering season, and the dense branches and leaves of the tree are dotted with clusters of small light green flowers, which are in dense bloom. A gust of wind blew by, and there was a faint fragrance of flowers in the air. When you get close to its stamens and smell it carefully, a strong smell goes straight into your nose, like some kind of spicy spice.

"This kind of flower has a small smell during the day and a strong smell at night." According to Mr. Li, a security guard in Xiayang New Village, the pots and shelves bloom in September and October every year, and there is a "stinky smell" once they bloom. Especially on nights when the sky is clear and there is no wind, a large number of floral fragrances are "gathered" together, and instead emit a sour, fermented smell, which is a bit uncomfortable to inhale in large quantities.

■The test found no harmful ingredients

The reporter learned that as the flowering period of this tree approaches, residents in Guangzhou, Foshan, Shenzhen, and even Guangxi have reported that they have heard of it too much. The smell of flowers will make you feel nauseous and nauseated. Is this floral scent "poisonous"?

In this regard, the relevant person in charge of the Municipal Gardening Department said that the pot shelf, also known as the sugar gum tree and the lampstand tree, is a tree of the Apocynaceae family. The flowering period is about summer and autumn, blooming at night, and the flowering period is only 20 days. The scent of flowers is stronger when the weather is warmer and naturally weakens when temperatures are cooler. Since different people have different levels of sensitivity to floral fragrance, people who are sensitive to this smell may find it pungent and unpleasant.

According to the "Illustrated Book of Higher Plants of China" published by the Institute of Botany of the Chinese Academy of Sciences, the whole plant of the plant can be used as an antimalarial, diaphoretic, and stomachic medicine; the root bark can treat chronic bronchitis, and its milk can be extracted Chewing gum raw material, but it is not stated whether the floral fragrance is harmful.

“There are very few planted in urban areas. As a greening tree species, pots and stands also have their advantages: first, they grow quickly; second, they have beautiful tree shapes; third, they have strong resistance to typhoons, and have not been found in previous typhoons. The whole plant is lodging; fourthly, there are fewer pests and diseases. "The relevant person in charge of the Municipal Gardening Department said that although the smell of potted flowers is intoxicating, there have been no cases of poisoning due to the smell of potted flowers.

Botanical taxonomy experts from Sun Yat-sen University have conducted research on whether the smell of flowering pots and shelves is toxic, and no special harmful ingredients have been found so far.

It is understood that the strong smell emitted by potted flowers is mainly due to the high concentration of linalool oxide contained in them, and linalool oxide is mainly used in daily chemical fragrances, with a dosage of 5% Within. In addition, it is also used to prepare artificial essential oils such as lavender oil.