The entire stanza of this poem does not rhyme at all. Althought this is a poem it does not have to rhyme, as numberous people believe it does. The term is not used for effect or deeper meaning, simply due to the taste of the poet. This is an excellent stanza written by the famous americain poet Emily Dickinson.
Autumn begins to be inferred
By millinery of the cloud,
Or deeper color in the shwl
That wraps the everlasting hill.
(A section of a poem by Emily Dickinson, Selected Poems(book))