Dictionary.net

An English botanist, son of Sir William Jackson; born at Halesworth, Suffolk, June 30, 1817. He took his M. D. at Glasgow University in 1839. He was assistant surgeon and naturalist of the famous expedition of Sir James Clark Ross; visited India in 1847; and in 1871 with John Ball ascended the Great Atlas in Morocco. From 1855 to 1885 he was on the directorate of Kew Gardens. Among his works are: "Botany of the Antarctic Voyage" (1847-60); "Himalayan Journals" (1854); "Student's Flora of the British Islands" (1870); "Botany" (Science Primers), in 1876; "Journal of a Tour in Morocco and the Great Atlas" (1878), with John Ball.