The album is a collection of fifty-two drawings, probably set up at the beginning of the seventeenth century. The tables are characterized by considerable heterogeneity in terms of scientific accuracy and quality of the stroke and are attributable to different designers: generally each table shows the image of a single plant and there are rare repetitions of the same subject; the designs tend to reproduce the original size of the species and are therefore often large. The tables can be collected in three groups related to different execution times. The first group, older, brings together small drawings, precise but of modest pictorial quality, which represent whole plants, such as cyclamen or two small ferns. The drawings are made on a cardboard cut out from time to time of different sizes, depending on the subject, and then glued to the album sheets. The second group represents many bulbous plants, particularly appreciated by collectors of the time, such as wild narcissus or in cultivated varieties, asphodels, lily of the valley, martagon lily, St. John's lily and some species of orchids. In these tables the species are almost always represented on blue paper, with great attention to the shape of the leaves and flowers but also of the underground organs, with a remarkable scientific precision for the period. The third group contains drawings of large size and of considerable artistic and scientific value which mainly depict exotic plants, such as sunflowers, Fritillaria imperialis or Canna indica or native species of ornamental or medicinal interest - the castor bean for example -, which were repeatedly represented in Painted herbs of the time as in that of the Bolognese naturalist Ulisse Aldrovandi. The work was most likely present in the Grand Gallery of Carlo Emanuele I, based on the Torrini Inventory (1659).