middle layer are trees trees that grow up to 24-30 m tall. The lowest layer are plants that grow on the floor of the rainforest. The plants help generate most of the earths oxygen.
The Double Coconut Tree
This is the largest seed in the plant kingdom. This plant
grows very slowly taking 1 year to generate the nut
and another year to generate the first leaf. The leaf blad
grows 20ft in length and 12ft in diameter.
The Banyan Tree
The tree starts growing on another plant to grow but
takes energy from the rain and moisture. The roots
grow very far so that the branches can grow very
far, up to many acres.
Source The Talipot Palm
The flowers it makes are clustered together and are the
biggest in the plant kingdom. The trunk can grow up to
80ft tall and 16ft in diameter. The plant then dies after
making flowers and fruits.
Source