Euan Hillhouse Methven Cox (1893 - 1977) was a Scottish plant collector, botanist, and horticulturist, who accompanied Reginald Farrer on his last botanical expedition to Burma and its border with China, from 1919 to 1920. He was a very successful propagator of rhododendrons and had an extensive collection in his garden at Glendoick, Perthshire, Scotland, which formed the basis of his commercial nursery,later run by his son, Peter A Cox, and grandson, Kenneth N.E. Cox.
Cox, E.H.M. (1930). The plant introductions of Reginald Farrer. London: New Flora and Silva Ltd. 1944. The Honourable East India Company and China. Proceedings of the Linnean Soc. 156: 5-8Euan Hillhouse Methven Cox, Peter Alfred Cox. 1958. Modern shrubs. Ed. Nelson. 215 pp.------------, ------------. 1956. Modern rhododendrons. Ed. Thomas Nelson & Sons. 193 pp.1947. Primulas for garden and greenhouse. Ed. Dulau; B.H. Blackwell. 86 pp.1945. Plant Hunting in China: A History of Botanical Exploration in China and the Tibetan Marches. Ed. Collins. 228 pp.1935. A history of gardening in Scotland. Ed. Chatto & Windus for New flora & Silva Ltd. 228 pp.1927. The modern English garden. Ed. Country life Ltd. 192 pp.1927. The evolution of a garden. Volume 132 Home university library of modern knowledge. Ed. Williams & Norgate. 256 pp.1924. Rhododendrons for amateurs. Ed. Country life Ltd. 111 pp.(Berberidaceae) Berberis coxii C.K.Schneid.(Orchidaceae) Taeniophyllum coxii (Summerh.) (Pandanaceae) Freycinetia coxii Huynh(Rosaceae) Sorbus coxii McAll. 
