In a poem titled after on
In a poem titled after one type of these, an "invisible worm that flies in the night" "has found out" the "bed of crimson joy" of one of these. A poetry collection titled after these entities contains the poem "The Albatross" and an introduction addressed to the "hypocrite reader." The Symbolist poet Charles Baudelaire wrote about some of these "of Evil." For 10 points, name this objects, one type of which titles William Blake's "The Sick Rose."
In a poem titled after one type of these, an "invisible worm that flies in the night" "has found out" the "bed of crimson joy" of one of these.
{flowers} [accept {roses} before "{Albatross}" is read]