Their leaves are evergreen. Each tree has only two pairs of leaves. They are wide and flat. The widest pair were found in the flache area, which can reach the height of an adult man just by its height. But how does it make it live so long? In this way, their leaves can grow 12-14cm a year. They lie on the ground, even when the wind is strong, they can't hurt the soil below
It can not only resist the erosion of soil by wind, but also absorb enough water with its huge surface area, which is also the necessary condition for them to survive. But there are other reasons why such a large leaf can not be adjusted for a hundred years. First of all, the Caspian Sea in this desert is relatively close, and a large amount of sea fog can keep its water content. Second, the roots deep into the sand can also absorb a certain amount of water, so they can be full of vitality all the year round!
There are only four leaves in this plant, two of which are true leaves. These two leaves will not wither. They will only grow larger and larger. That is to say, their life span is the life span of the whole plant. Their leaves have a growth zone, and the cells nearby have a certain ability of meristematic growth, and they will continue to produce tissues of information, so that the whole leaf will become larger and larger. In fact, their front end is also aging, and the old part has long disappeared. But there will always be new tissues in the growth zone as substitutes, so we may misunderstand that they will not be damaged. This is the secret that it will not grow old.
