He translated the Lettres sur la botanique of Rousseau. In 1788 he published Thirty-eight Plates with Explanations, illustrating the plant system devised by Linnaeus As a priest in the Anglican church Thomas Martyn preached until he was 82 years old; in 1830 George Cornelius Gorham, his curate, published a dual biography consisting of additions to Martyn's memoir of his father and Martyn's autobiographical memoir (Memoirs of John Martyn, F.R.S., and of Thomas Martyn, B.D., F.R.S, F.L.S., Professors of Botany in the University of Cambridge, London, Hatchard & Son).
Martyn translated Rousseau’s Letters on Botany. In 1788, he published thirty-eight plates with explanations illustrating Linnaeus' plant system; as a priest in the Anglican church, Martyn preached until age eighty-two; in 1830, Gorham, his curate, released a dual biography that included additions to Martyn's father’s memoir and Martyn's autobiographical memoir (Memoirs of John Martyn, F.R.S., and of Thomas Martyn, B.D., F.R.S, F.L.S., Professors of Botany in the University of Cambridge, London, Hatchard & Son).