Olive Blanche Davies MSc (27 October 1884 – 1976/7) [1] was an Australian botanist and botanical artist, noted for being co-author with Alfred Ewart of their 1917 book The Flora of the Northern Territory, and for producing many of the illustrations.
[2] Olive was born Toorak, Victoria, the youngest of six children of Elizabeth Locke Mercer (*c1850) from Kirkcudbright and Sir Matthew Henry Davies (1850-1912) [3] of Geelong.
[4][5] She was a government research scholar studying biology at Melbourne University, and wrote a paper in 1911 on Petterd's semi-slug Cystopelta petterdi, and another in 1914 on Caryodes dufresnii, a large land mollusk native to Tasmania.
[6][7][8] On 22 December 1915 at 'Cluden', in Brighton, Australia, Olive Blanche Davies married Arthur Lyle Rossiter, a lieutenant in the Australian Expeditionary Force, and elder son of Edward Lyle Rossiter of Elsternwick.
In 1924 he was appointed on a temporary basis as senior master at Melbourne High School.