Reprinted from Kew Bulletin vol. 56, part 1, 2001. Thedesert date (Balanites aegyptiaca) has been used inEgypt for over 4,000 years as a valuable source of oiland medicines. Nine species and 11 infraspecific taxaare described plus one subspecies and two varietiesfor the first time. 15 full page line illustrations and 10distribution maps.