En Tibi herbarium, short for En tibi perpetuis ridentem floribus hortum (Here for you a smiling garden of everlasting flowers) is a 16th-century herbarium. It contains 473 dried plant specimens, belonging to 455 species and subspecies and 97 families, and is one of the largest and oldest known of its kind. A fine leather binding, blind and gold embossed ornamentation, and gilt and gauffered edges are all features of the large 42 x 29 cm book. The characteristics of the paper and the consistent anvil-and-hammer watermark indicate that all the sheets are from a single source. A valuable and costly 16th-century object, its full provenance is unknown; its earliest possessor was the Habsburg Emperor Emperor Rudolph II in the 1500s. The book is currently held in the treasure room of the Naturalis Biodiversity Center in Leiden.
- ^ Tinde van Andel et al., "Sixteenth-century tomatoes in Europe: who saw them, what did they look like, and where did they come from?" (preprint 2021)