Poplar tree reading the answer is urgent ~~~
The poplar tree was a special kind of tree that grew in desert areas. Populus euphraticus was a kind of decidual-leaf tree. Its trunk was thick, its leaves were dense, and its crown was spherical. The bark of the poplar tree is smooth and usually gray or grayish brown. Poplar trees have a very strange growth pattern. Their roots are very developed and can be deeply rooted in the sand of the desert. The leaves of the poplar tree were long and oval, with a silver luster on the surface. The leaves were tough and could withstand drought and high temperatures. Populus euphraticus was widely used in Chinese history because of its strong adaptability and was known as the "boat of the desert". In ancient China, poplar trees were often used for construction, wood, medicinal materials, and so on. In addition, the bark and leaves of the poplar tree could also be extracted to produce a precious medicine called " euphraticine ", which had a certain medicinal value.