[1] She was also a member of the British Association for the Advancement of Science as well as the Royal Horticultural Society.

[3] In 1896 Armitage became a founding member of the Moss Exchange Club.

[1] The Moss Exchange Club would later become the British Bryological 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.