Marianne North (October 24, 1830-August 30, 1890) was an English botanical artist, writer, and world traveler who visited 15 countries in 14 years.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Marianne_North

Honeyflowers and Honeysuckers, South Africa by Marianne North
c.1882 / Oil on board / 20″x13-3/4″ / Marianne North Gallery, Kew Gardens, London, UK

Marianne North on Art UK: https://artuk.org/visit/venues/marianne-north-gallery-5000

Further reading:
https://www.lindahall.org/marianne-north/
https://www.kew.org/read-and-watch/marianne-north-botanical-artist
https://www.artiststudiomuseum.org/blog/marianne-north-pioneering-botanical-artist/