Ex-situ conservation efforts to propagate "A. brownii" by seed in botanical gardens were also unsuccessful. During the 1981 expedition, "A. bronwii" seeds were collected by Sheila Conant and presented to the Waimea Arboretum on the Hawaiian island of Oahu and the Kew Gardens in London, England. Although the seeds at the Waimea Arboretum germinated and grew for a while, no plants survived beyond the stage of seedling development. Information about the outcome of the seeds sent to Kew Gardens is unavailable.