Symbolism of Flowers in Literature

In Louise Glück's poem "The Wild Iris," various floral images are employed to represent deeper emotional states and experiences. One flower, often seen in literature, symbolizes rebirth and renewal. Its recurring presence in Glück's work invites readers to explore how nature reflects the emotional landscape of the human condition.

Based on this context, which of the following flowers is most commonly identified in literary symbolism as a representation of death and transience?