Ode to the West Wind- Precisely what I was referencing in my notes on Keats, this poem depicts autumn as the bringer, or at the very least, contributor to and of death. The third (and part of fourth) stanza reads:
The winged seeds, where they lie cold and low,
Each like a corpse within its grave, until
Thine azure sister of the Spring shall blow
Her clarion o’er the dreaming earth…
This binary of spring and autumn and life and death is a common one, yet Shelley does it well, I believe.