For the Australian tennis player, also known as Jack Hawkes, see John Hawkes (tennis).John Gregory "Jack" Hawkes OBE FLS (27 June 1915 in Bristol – 6 September 2007 in Reading) was a British botanist, Mason Professor of Botany at the University of Birmingham.He specialised in studying the taxonomy of wild potato species (Solanum sect.
Petota), identified sources of resistance to the potato cyst nematode and played a role in establishing programs to maintain agricultural biodiversity.He was awarded the OBE in the 1994 Birthday Honours.