The leaves of Acacia mangium (commonly known as Big-leaf Acacia in this part of the
world) we usually see are actually phyllodes (mutation of the
petioles). The bipinnate true leaves only appear when it is still a
baby seedling. However, when I visited Tung Tsz Nursery in Tai Po
on January 12, 2008, I incidentally saw true leaves on a Acacia
mangium tree. How very extraordinary!
The top of this tree was damaged which could not
inhibit the growth of leaf buds on the trunk. The chaotic growth of
new leaves emerged the true leaves which should only be seen when
the tree was still a seedling. Nonetheless, it does not happen to
the other trees of the same age in its vicinity
From this experience, we see other possibilities
for true bipinnate leaves to grow other than the usual seedlings.
The knowledge we get from books is the common
facts. We can acquaint ourselves more with trees in the field.
「Learn from Mother Nature」 is an excellent way to learn after all.
*translated by Mary Chung