His best known popular work is his Dictionary of Plant Names, which found its way into the libraries of most horticulturalists.[102] One of the focuses of his work at the Natural History Museum was the flora of the Caribbean, where he carried out field work.[11] Stearn continued to return to the Cambridge Botanic Garden, cared for his own garden and worked with the RHS to become an authority on horticulture as well as botany.[1] William Stearn collaborated with his wife, Eldwyth Ruth Stearn, on a number of his most important works, including Botanical Latin[1] and Dictionary of Plant Names and translating German botanical history into English.[104] Just before his death he completed a revision of his original Epimedium monograph.[82][56]