Constructal Trees

I love the branching form of dicot trees --
Order, chaos, criticality please
The eye with expectation and a tease
Of difference. The bald cypresses have knees
That clear the water. Mangroves border seas
And branch above and below their trunks. Breeze
Brings movements to branches as their leaves seize
The air. A few have flowers, attract bees
And bats and birds and butterflies. Decrees
Are sung from their branches. We feel disease
If we're too far away from their firm lees
And their shadow darkening a few degrees
From the heat. And what other guarantees
Our air, ensuring that we do not wheeze
Through life? (Unless their pollen makes us sneeze.)
Complex beauty belongs to all of these --
We thus must always be all life's trustees.