Armitage was born on 11 December 1865 at Dadnor House in Bridstow to Isabel Jane Armitage (née Perceval) and her husband Arthur.[3] Armitage was educated at home.[3] Her father was a member of the Woolhope Naturalists’ Field Club and her mother painted watercolours, some of which are held in the club's library. Despite her father having served as president of the Woolhope Club, Armitage was unable to join, as club banned the admission of women.[3]
Botanising
In 1896 Armitage became a founding member of the Moss Exchange Club.[1] The Moss Exchange Club would later become the British Bryological Society.[4] Armitage was also a member of the Botanical Essay Society.[1] Armitage botanised frequently in Herefordshire and would sometimes be accompanied by Charles Herbert Binstead.[2] She travelled frequently, including to Madeira, Grand Canary, Tenerife, Spain, Azores, Norway and Switzerland, and often collected specimens on her trips.[1][2] She was also a botanical artist and Kew holds a collection of her paintings.[3]