Edith Struben's beautiful painting of the White Gardenia (Gardenia thunbergia) which is one of the Kirstenbosch Centenarians (accession number 408/13), introduced into the garden in September 1913 by the first Curator of Kirstenbosch, Joseph William ‘Jimmy’ Mathews and planted soon afterwards. Plants grown from cuttings are planted in the Dell and the Arboretum. The painting is in the Bolus Herbarium at the University of Cape Town and is dated c. 1915. Some of her paintings also hang in the Compton Herbarium at Kirstenbosch.
The only photo I can find of Luncarty (off the Royal Institute of British Architects website). It was designed by F.K. Kendall who was a partner of Herbert Baker's.
A painting by Edith Strubens of proteas which has hung in the Compton Herbarium since the 1940s and is described by John Rourke as depicting "some early hotricultural successes achieved at Kirstenbosch . Pictured against a backdrop of the eastern slopes of Table Mountain and Devil's Peak in profile, the foreground is dominated by Protea grandiceps, Leucospermum reflexum and Serruria florida. Although undated, one can be fairly certain that is was completed between 1920 (her arrival at 'Luncarty') and her death in 1936. It was probably painted in the late 1920s." (Information by John Rourke, 1989, on the back of the painting.)
Ruscia strubeniae, a mesemb from the Piketberg area, was named after Edith Struben by Louisa Bolus, as was Watsonia strubeniae from the then Transvaal. (This image from Daves Garden website.)
Edith Struben's obituary in The Journal of the Botanical Society of South Africa, 1936. She and Sir Lionel Phillips died in the same year.