This chapter examines horti sicci, bound volumes of dried plant specimens, which caused difficulty upon their accession to the British Museum as they raised the question of how important it is for a library object to look and be bound like a book: Do collections of dried plants in folio codices belong in a library? Is a book simply a bound item, with a cover, with a spine? The chapter explores Sloane’s presentation and storage of his botanical collections within the library space and argues that the need to visually reproduce plants in printed books led to a triangulation of shared material: the original specimen, the engraved reproduction, and the attempt to identify or describe through language. It ends with a detailed discussion of plant names in John Milton’s Paradise Lost, showing how the library space can be extended metaphorically to support literary analysis.