[citation needed] After teaching for a period, he joined the staff of the National Herbarium, and was made Officer in Charge of Botanical Survey in 1959, and Assistant Director in 1963.
[citation needed] His main contributions to botany have been publications on Ebenaceae and Gramineae, especially the genus Eragrostis.
The Pedaliaceae genus of Dewinteria is named after him,[2] with the single curious species D. petrophila from the Kaokoveld in Namibia.
His main collecting areas were Pretoria and northwards to Messina, Kruger National Park, Namibia, Northern Cape, Okavango, Kaokoveld, Botswana, Matopos, Caprivi Strip.
B. Killick, were responsible for the publishing of "Sixty-six Transvaal Trees" in 1966[3] on the occasion of South Africa's Republic Festival.