Hothouse, aka The Long Afternoon of Earth
by Brian Aldiss
In this science fiction classic (1962) based on Hothouse , Hugo Best Short Story Winner of 1962, we are transported millions of years from now, to the boughs of a colossal banyan tree that covers one face of the globe. The last remnants of humanity are fighting for survival, terrorised by the carnivorous plants and the grotesque insect life.