Botanist and horticulturalist. Assistant in Joseph Banks's library and herbarium, 1818 or 1819. Garden assistant secretary, Horticultural Society of London, 1822–7; general assistant secretary, 1827–41; vice-secretary, 1841–58; honorary secretary, 1858–62. Lecturer on botany, Apothecaries' Company, 1836–53. Professor of botany, London University (later University College, London), 1829–60. Horticultural editor of the Gardeners' Chronicle from 1841. FRS 1828.
Sources: Desmond, Ray 1994 DNB DSB
(See the bibliography for full references to sources)