I wonder what street trees in Shenzhen are called when they are full of white flowers in autumn.

Pot rack, Chinese name sugar gum tree (Latin scientific name Alstonia? scholaris)

Attached is a report for your reference:

Does the potted flower smell dizzy?

Urban garden department: only a small amount of plants are planted in some sections of the city, and experts have not found any harmful components.

Reading: 557 times from: Zhongshan Daily No.6865438 +03-09- 16 A4 edition.

"In the evening, I opened the front and rear windows and sat on the balcony to enjoy the cool. Suddenly, there was a strong smell of flowers and trees. I personally feel that the taste is quite good, but many people in the community say that smelling too much will make you dizzy and queasy. " Recently, Ms. Zhang, a citizen who lives in Yongyiting, Xingwen Road, reported that there is a kind of green tree called "potted plant frame" near the community, which is in its flowering period recently, but nearby residents found that the flowers it sent out emit a strong smell, which will cause physical discomfort.

■ Greening trees have a pungent "floral fragrance"

At noon yesterday, the reporter found this kind of green tree called potted frame reflected by Miss Zhang in Xingwen Road, Bo 'ai Third Road and Sports Road in the Eastern District. The basin frame is in the flowering period, and the dense branches and leaves on the tree are dotted with clusters of pale green flowers, which are dense. A gust of wind blew and there was a faint fragrance of flowers in the air. Near its stamens, a strong smell goes straight to the nasal cavity, like some kind of spicy spice.

"This kind of flower tastes small during the day and big at night." According to Mr. Li, the security guard of Xiayang New Village, the basin frame blooms in September and June and 65438+1October every year, and it smells "bad" as soon as it blooms. Especially on a sunny and windy night, a large number of flowers "gather" together, but they give off a sour fermentation smell, which is uncomfortable to inhale in large quantities.

■ No harmful components were found in the test.

The reporter learned that as the flowering period of this tree approaches, residents in Guangzhou, Foshan, Shenzhen and even Guangxi have reported that smelling too many "smelly flowers" will make them feel sick. Is this floral fragrance "poisonous"?

In this regard, the relevant person in charge of the municipal garden department said that the pot frame, also known as the rubber tree and the lamp tree, belongs to the oleander tree. The flowering period is about summer and autumn, and it blooms at night, with a flowering period of only 20 days. When the weather is warmer, the fragrance is stronger, and when the temperature is lower, the fragrance naturally weakens. Because different people are sensitive to the flowers, people who are sensitive to this smell may find it pungent and unpleasant.

According to the Atlas of Higher Plants in China published by Institute of Botany, Chinese Academy of Sciences, potted plants can be used as antimalarial drugs, sweating and stomach-invigorating drugs. Root bark can cure chronic bronchitis, and milk can be used to extract chewing gum, but whether the fragrance of flowers is harmful has not been explained.

"There is very little planting in urban areas. As a greening tree species, the basin frame also has its advantages: first, it grows fast; The second is the beauty of trees; Third, the typhoon resistance is strong, and the whole plant lodging phenomenon has not been found in previous typhoons; Fourth, there are few pests and diseases. " The relevant person in charge of the city garden department said that although the smell of potted flowers is smoky, no cases of poisoning due to the smell of potted flowers have been found yet.

Experts in plant taxonomy of Sun Yat-sen University have studied whether the smell of potted flowers is toxic, but no special harmful components have been found so far.

It is understood that the smell of potted flowers is relatively strong, mainly because the concentration of linalool oxide contained in them is relatively high, and linalool oxide is mainly used for daily necessities, and the dosage is less than 5%. In addition, it is also used to prepare artificial essential oils such as lavender oil.