Despite numerous excursions in the Ongoye-Mtunzini area, no other specimens of Encephalartos woodii have ever been found.
In 1907 he made a second attempt in the company of E. E. Galpin who had previously accompanied him on cycad-hunting trips to the Eastern Cape.
He gave his name to a number of species, including Encephalartos hildebrandtii, the Hildebrandt's Starling (Hildebrandt's Starling), and Hildebrandt's Francolin (Pternistis hildebrandti), the latter two which he discovered in Kenya in the African Great Lakes region.