Catalogue of about 3300 plants in the botanical garden of Leiden University (106 illustrated), compiled, and with plates apparently drawn by the author. Hermann had only recently introduced many plants to Europe from the East Indies, Ceylon, the Cape and America. Most entries give the Latin name of the plant with references to the literature; some give more detailed descriptions. Hermann sailed with the VOC (Dutch East India Company) to Ceylon in 1672 and collected many plants there. As a professor of botany and medicine at Leiden, he directed the University botanical garden from 1679 to his death in 1695. He made it the richest garden in Europe during the Dutch golden age, always in competition with Jan Commelin at the Amsterdam botanical garden. Hermann's premature death prevented publication of a planned second part of this catalogue.

Since the frontispiece and all botanical illustrations are on integral leaves, references to copies with 107 "plates" apparently include the frontispiece. Digital facsimile from Biodiversity Heritage Library at this link.

In this treatise on the flowering plants in the Hortus Botanicus Leiden Hermann coined the term Angiospermae as the name of one of his primary divisions of the plant kingdom. This division included flowering plants possessing seeds enclosed in capsules, distinguished from what Hermann named "Gymnospermae, or flowering plants with achenial or schizo-carpic fruits, the whole fruit or each of its pieces being here regarded as a seed and naked" (Wikipedia article on Flowering plant, accessed 1-2020). Hermann used the term "Angiopolyspermae" on p. 1 of this work. Digital facsimile from Bayerische StaatsBibliothek at this link.

Catalogue of the plants in the Hortus Botanicus Leiden, posthumously edited from Hermann's unpublished manuscript, and reproducing 111 of Hermann's botanical illustrations, by William Sherard. Digital facsimile from Real Jardín Botánico de Madrid at this link.

Paul Hermann's study of the plants of Sri Lanka collected during his experience as a Ship's Medical Oficer in the Dutch East India Company after Hermann completed his medical studies at Padua. This work was edited for posthumous publication by William Sherard. Digital facsimile from Google Books at this link.