Hook.

Sir William Jackson Hooker
William Jackson Hooker in 1851 by Thomas Herbert Maguire
Born	6 July 1785 Norwich
Died	12 August 1865 (1865-08-13) (aged 80)
Nationality	British
Fields	Botany
Institutions	Royal Botanic Gardens, Kew
Alma mater	Norwich School
Known for	Founding the Herbarium at Kew
Author abbrev. (botany)	Hook.
Signature

Sir William Jackson Hooker KH FRS FRSE FLS (6 July 1785 – 12 August 1865) was an English systematic botanist and organiser, and botanical illustrator. He held the post of Regius Professor of Botany at Glasgow University, and was Director of the Royal Botanic Gardens, Kew. He enjoyed the friendship and support of Sir Joseph Banks for his exploring, collecting and organising work. His son, Joseph Dalton Hooker, succeeded him to the Directorship of Kew Gardens.

Hooker was born in Norwich. His father, Joseph Hooker of Exeter, a member of the same family as the celebrated theologian Richard Hooker, devoted much of his time to the study of German literature and the cultivation of curious plants. He was educated at Norwich School and afterwards took up as a recreation the study of natural history, especially ornithology and entomology. He subsequently confined his attention to botany, on the recommendation of Sir James Edward Smith, whom he had consulted respecting a rare moss.

Hooker inherited enough money to be able to travel at his own expense. His first botanical expedition—at the suggestion of Sir Joseph Banks—was to Iceland, in the summer of 1809. The specimens he collected, along with his notes and drawings, were destroyed by fire on the homeward voyage; an incident in which he nearly lost his life. His good memory, however, aided him to publish an account of the island, and of its inhabitants and flora; his Tour in Iceland, 1809, was privately circulated in 1811 and reprinted in 1813.