Joseph Dalton Hooker was a British botanist born on June 30, 1817, and died on December 10, 1911. He is renowned for his contributions to plant taxonomy and plant geography, serving as the director of the Royal Botanic Gardens, Kew, and participating in several scientific expeditions.
Source: Introductory essay to the Flora Indica: including preliminary observations on the study of Indian botany; a summary of the labours of Indian botanists; a sketch of the meteorology of India; outlines of the physical geography and botany of the provinces of India: With 2 Maps. By J. D. Hooker and Thomas Thomson. Reprinted from the