In my opinion, the whole poem is quite ironic - although she is mentioning the exultation and the royal color of death, the poem itself begins with the narrator saying that she cannot breathe - that she doesn't want to die.
So, I would say that the ironic parts are:
Exultation is the going
Of an inland soul to sea, -
Past the houses, past the headlands,
Into deep eternity!
Answer:
natural vegetation, i believe!
Explanation:
the exact definition of natural vegetation is a cover of plants that can grow alone with little to no human interference, so i believe this fits your description best!
hope this helps! ☆
Edgar Allan Poe is a American author that wrote Gothic, macabre stories.<span />