Botanical Curves

Plants are full of curves - gentle curving petals of a deciduous magnolia,

The cups and spirals of young leaves that will flatten out as they expand to their mature form,

The graceful white markings that follow the veins on a tropic leaf,

The round nuts on a palm,

An old smooth edged leaf caught by deep green leaves,

And the folds of an amaryllis bud.

Are there any straight lines in nature? Or is ‘straight’ simply a matter of perspective - where we don’t have a large enough view to discern the curvature?