Enid Lucy Robertson (née Ashby) AM (20 November 1925 - 10 July 2016) was a systematic botanist, curator of herbaria, and conservationist from South Australia.

[4] Robertson was made a member of the order of Australia in 1987 for her services to botany.

[6] Robertson, and her extended Ashby family, were members of the Religious Society of Friends, also known as Quakers.

[6] Robertson said that her grandmother Esther was so organised that even when she was bedridden for many years due to sickness, she continued to do the books from her bed.

[6] Robertson's aunt was Alison Marjorie Ashby a botanical artist and plant collector.

[7] Robertson stated she was very close with her extended family, when she was growing up she lived across the street from her grandparents and her aunt.

[6] Robertson grew up in a house called Allambee, over the road from her grandparents.

[6] In 1966, after her husband Thorburn Robertson, a doctor and son of Thorburn Robertson,[8] had died aged 40, her father offered to renovate the Allambee house she grew up in for her and her children to live in.

[6] The Ashby family donated the Wittunga property to the Board of Governors of the Adelaide Botanic Garden in 1965.

[10] In 1947, Robertson took on two positions at the University of Adelaide, as a systematic botanist at the Waite Agricultural Research Institute, and as a lecturer in the medical school on microscopic anatomy and human histology.

[6] The Waite role had become available after Constance Margaret Eardley stepped down as the curator of the ADW Herbarium to take extended leave overseas.

[9][6] Eventually, Robertson stopped lecturing when the role with the Waite Institute became fulltime.

[6] She took plant specimens to Black's house at Brougham Place, North Adelaide and he assisted her with identifications.

[6] When Black passed away in 1951, she completed his revision of the fourth volume of the second edition of his publication Flora of South Australia.

[10] From 1953 until 1955 she was a senior research fellow at the Department of Botany at the University of Adelaide.

The land was the section of the Wittunga property that her aunt Alison Ashby had inherited and donated to the National Trust of South Australia.

She then began to employ more university students who needed part-time jobs to support their studies, one of whom was Hugh Possingham.

[6] In 1987 Robertson retired, and turned her attention to the flora of the Mount Lofty Ranges, investigating the threat of invasive species, and lodging over 1,200 voucher specimens of the weeds in the State Herbarium of South Australia.

[2] In 1992 Robertson was awarded the Australian Natural History Medallion, by the Field Naturalists Club of Victoria.

[2] This is awarded to those who have been judged to have made the best contribution to understandings of Australian Natural History.

Restoration of grassy woodland : Watiparinga Reserve management plan with an overview by Ann Prescott (2nd ed.).