What metaphors are used in I, Too, Speak of the Rose by Emilio Carballido?

At the core of the play is the metaphor of the rose. This image is not brought out too often, but it is very strong when it appears. The first encounter is, of course, the rose in the title. One is expecting to experience the rose since one has been warned it is coming. It is, says Peden, "an extended metaphor concerning the nature of reality."