William Harold Pearsall (23 July 1891 – 14 October 1964) was a British botanist, Quain Professor of Botany at University College London 1944–1957.‘PEARSALL, William Harold’, Who Was Who, A & C Black, an imprint of Bloomsbury Publishing plc, 1920–2008; online edn, Oxford University Press, Dec 2007 accessed 8 July 2013
Awards and honours Pearsall was elected a Fellow of the Royal Society in 1940. His nomination reads:
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