As a child, Brewis had spent long holidays studying the orchids on Noar Hill,[3] near Selborne.
This led her to study the works of Gilbert White, and eventually to a degree in Zoology at Somerville College, Oxford.
Her marriage to John Brewis took her to many localities before returning to Hampshire on her husband's retirement.
[4][5] Over the next 27 years, she meticulously catalogued hundreds of species,[6] and co-authored the definitive guide to Hampshire's plant life.
[7] Every summer she would organise botanical safaris for local children.