Theatrum botanicum: The theater of plants: Or, An herball of large extent: containing therein a more ample and exact history and declaration of the physicall herbs and plants ... distributed into sundry classes or tribes, for the more easie knowledge of the many herbes of one nature and property ... / collected by the many yeares travaile, industry and experience in this subject.

Parkinson, the last of the old English herbalists, was Apothecary to James I. His massive herbal of 1,755 pages described nearly 3,800 plants, nearly double the number described in the first edition of Gerard. Parkinson was more original than either Gerard or Johnson. Rohde called the Theatrum botanicum the “largest herbal in the English language”. Digital facsimile from the Hathi Trust at this link.