South african botanist, botanical collector, and curator and scientific illustrator (1877–1970).
Harriet Margaret Louisa Bolus née Kensit (31 July 1877 in Burgersdorp – 5 April 1970 in Cape Town) was a South African botanist and taxonomist, and the longtime curator of the Bolus Herbarium, from 1903. Bolus also has the legacy of authoring more land plant species than any other female scientist, in total naming 1,494 species.