Yes, the collected poems by Sylvia Plath do include the poems from her famous collection titled Ariel. This collection was published posthumously in 1965 and contains some of her most well-known and haunting works.
Sylvia Plath wrote Ariel during a particularly intense period of her life, and the themes of the poems reflect her struggles, emotions, and experiences. The collected poems encompass her entire poetic career, bringing together her early works as well as her late masterpieces.
It’s important to note that while Ariel is included in the collected poems, some editions may have variations in content. Readers are encouraged to check the specific edition they are interested in to confirm the inclusion of all desired poems.